- SYNTOR X 9000 BOARDS
		- Personality Boards
			- Cable Connector Pin Locator
			- Bottom Side Locater
			- Receive and Transmit Audio Routing
		- Personality Board Jumpers
			- Jumper Locator for the HLN4925A
			- Jumper Locator for the Top of the HLN5299A
			- Jumper Locator for the Bottom of the HLN5299A
			- Jumper Locator for the Top of the HLN5299B
			- Jumper Locator for the Bottom of the HLN5299B
		- Personality Board J301 Internal Option Board(s) Socket
		- Common Circuits Boards
		- Control Head Circuit Board Pin Out
		- Control Heads (early version)
			- Jumper Locator for the Bottom of the Control Boards
			- Parts Locator for the Top of the Control Boards
		- Control Heads (later and latest version)
			- Jumper Locator for the Bottom of the Control Boards
				- Jumper Locator for the Bottom of the New HLN6284C Control Board
			- Jumper Locator for the Bottom of the Display Boards
			- Parts Locator for the Top of the Control Boards
		- DEK Circuit Board Pin Out
	- Syntor X 9000 Home
	- HOME

Personality Boards:

The conventional Syntor X 9000 and trunking Syntor X 9000E use the same Personality Boards. The board part numbers are HLN4925 (earlier boards) and HLN5299 (later boards). For "normal" use these boards only have slight differences depending on the board part number and its revision letter. For special options that go beyond "normal" use, the HLN5299 has lots more optional capabilities built in (just compare the boards in the jumper table below). The Personality Board has the radio connector on it and is the external interface for the radio.

The Syntor X 9000 was a significant departure from previous radio models. For one thing, the Systems 9000 bus allowed the Rx volume control to be moved inside the radio drawer and remotely controlled from the control head. Older radio models placed the volume control inside the control head and routed the actual Rx audio signal from the radio drawer, through the control head and back into the radio drawer. This basic change is why the Personality Board J1 pin 33 Option Rx Audio connection was added to the Syntor X 9000. Older Systems 90 and Systems 90*s radio models would rewire the control head audio signal path routing for options like Securenet. If you look at the Securenet example, when clear audio is being received J1 pin 2 audio is sent to the speaker, but when encrypted audio is being received J1 pin 2 audio has encrypted audio and only the Securenet hardware has decrypted audio. The old way was to rewire the control head so all J1 pin 2 audio is processed by the Securenet option, sent to the control head volume control and then back to the radio drawer. Since the audio volume control connection was now buried inside the Syntor X 9000 radio drawer and not run through the control head, the old method of rewiring the control head audio connections no longer worked. So, the Option Rx Audio connection was added and its Rx audio path is remotely configured/selected via the Systems 9000 bus. Now any optional accessory that has to process the receive audio or inject its own audio signal (this used to be called Sidetone on older radio models) into the radio speaker, has a way to do it, without having to rewire the control head. Other than the microphone Tx audio input, older radio models used to have dedicated input lines for specialized types of Tx modulation (i.e. external Tx PL/DPL, Securenet Tx, etc.). These additional dedicated old style connections have been combined into the Syntor X 9000 J1 pin 3 Option Tx Audio line, with the Systems 9000 bus configuring/selecting the actual Tx modulation audio path. Another Systems 9000 change is J1 pin 1 PTT is not connected to the control head any longer. Now the control head sends serial data over the Systems 9000 bus to tell the radio drawer and any Systems 9000 options when the microphone PTT has been pressed or released.

As a result of this significant design departure, almost all the Syntor X 9000 options have their own internal microprocessor built into them to communicate with the Systems 9000 bus. The exception is the old PAC vehicle repeater, which uses the Personality Board J1 pin 1 PTT line to transmit through the radio drawer because it does not have a Systems 9000 microprocessor.

The low band seems to be picky about the compensation adjustment, much more than the VHF, UHF or 800 MHz radios. The low band does use a unique reference modulation circuit not found in the other radios. The compensation adjustment instructions are in the front part of the low band manual under the "Maintenance and Troubleshooting" section and is really easy to do after you find R628 hiding near a corner of the RF board. The problem I ran into was I could not adjust the deviation on one radio above 4.6 KHz until after I did the Compensation adjustment (the deviation pot was at maximum). After the compensation adjustment I had to turn the deviation adjustment down to get it below 5 KHz deviation.

Syntor X 9000 Radio Connector
Radio J1 Pin #	Radio Pin Description
A	A+
B	A-
1	PTT (Input)
2	Detected Audio (Output)
3	Option Tx Audio (Input)
4	Reset (Input/Output)
5	Busy (Input/Output)
6	Switched B+ (Input)
7	Switched B+ (Output)
8	B- (ground)
9	Filtered Audio (Output)
10	Chassis (ground)
11	Detected Audio Shield
12	A+ (later versions only - see below)
13	Spare 2
14	Mic. Low (shield ground)
15	Filtered Audio Shield
16	Write Enable (Input)
17	Bus + (RS-422 Input/Output)
18	Option Tx Audio Shield
19	Bus - Shield
20	B- (ground)
21	Channel Activity (Output)
22	Speaker Audio Low (Output)
23	KEY (Input)
24	Spare 1
25	Bus - (RS-422 Input/Output)
26	Analog Ground
27	Mic. Hi (Input)
28
29	KID (Input)
30
31	B- (ground)
32	B- (ground)
33	Option Rx Audio (Input)
34	Option Rx Shield
35
36
37	Speaker Audio Hi (Output)

• Here is a pin locator drawing for the solder side of the radio's J1 cable connector. It is accessed by opening the radio handle, pushing the button to release the top cover and removing the cover.
• Pin 1 PTT input is only used by options like the PAC vehicle repeaters which has no Systems 9000 bus.
• Pin 2 Detected Audio output is the flat demodulated received signal direct from the discriminator. There is no squelch audio muting or RAS on this pin.
• Pin 3 Option Tx Audio input is used by some internal option boards like Securenet and external options like the Vehicle Repeater System. The Option Tx Audio input does not add any audio pre-emphasis. The radio can internally route this Tx audio input path through the deviation limiter circuit with bandwidth filtering (its bandwidth is about 300 Hz to above 3 KHz and then rolls off sharply) or it can go straight into the VCO modulation circuit as flat audio without any deviation limiter or bandwidth filtering (its bandwidth is about 2 Hz to above 6 KHz and does not roll off sharply). The microphone is the other Tx audio input path (see pin 27 below). A drawing is worth 1000 words.
• Pins 4, 5, 17 and 25 are the Systems 9000 serial communications bus which connect the radio, control head, internal options and external options.
• Pin 9 Filtered Audio output is used by the some internal option boards and external options like the Vehicle Repeater System. The filter circuit de-emphasizes the audio. The filtered audio source can be from the radio's detected audio (pin 2) or it can be from the option Rx audio (pin 33 or from an internal option board). Any one of these audio sources (pin 2, pin 33 or and internal option board) can be fed through the filter circuit that de-emphasizes the audio and filters its bandwidth to be about 270 Hz to 3.5 KHz. This will filter out PL or DPL from the received signal. In addition pin 33 can bypass this filter / de-emphasis circuit (i.e. flat) and go straight to pin 9. So pin 9 can not be absolutely guaranteed to have filtered / de-emphasized pin 2 Rx detected audio coming from it unless you know how pin 33 is configured and then what type of source audio is being fed into pin 33. A drawing is worth 1000 words.
• Pin 12 on the HLN4925 does not have any connection to A+. It needs to be added for some accessories.
• Pins 13 and 24 are Spare lines. Some options like the PAC vehicle repeaters, Motorola factory custom SP model radios or field modified radios may use one or both spare lines. Sometimes a spare line is used to feed power to the control head (a potentially dangerous practice unless a 3 amp fuse is placed before the spare line power connection).
• Pins 16, 23 and 29 are for programming the encryption key into an optional internal Securenet board (a special HKN4256A Securenet radio cable is required to access these pins). The external Securenet Physical Security Hosing does not use these pins or this special radio cable.
• Pin 21 Channel Activity output is from the squelch circuit and simply indicates any activity on the received frequency (i.e. when the squelch is open). It is not conditioned by PL or DPL (i.e. when this signal is active, the received PL or DPL, if any, may or may not match what was programmed). This pin is not normally used, as data sent through the Systems 9000 serial bus controls the green Rx BUSY light on the control head.
• Pins 22 and 37 are the speaker output.
• Pin 27 Mic High input is the microphone audio line. The Mic High input adds audio pre-emphasis. One of three different audio paths exist to the transmitter. This path (Mic High) is one and the other two are input from pin 3 or an internal option board (see description above). A drawing is worth 1000 words. The microphone pin is 600 ohms input impedance and has a DC voltage applied to it to run the microphone preamplifier (the preamp is built into the microphone). This line is also shorted to ground when the programming cable is plugged into the RIB. When shorted it allows U502 to be programmed via the RSS. Never power the radio on of off when this pin is shorted as it may corrupt the code plug in the radio or control head. Of course the microphone audio will not work when this pin is shorted.
• Pin 33 Option Rx Audio input is used by some internal option boards like Securenet and external options like the Vehicle Repeater System. It is an alternate audio input to the radio's audio amplifier and out to the speaker. Normally the speaker would get filtered / de-emphasized audio (see the pin 9 description above) using the radio's detected audio (pin 2) as its audio source. Instead the speaker can get either filtered / de-emphasized audio (see pin 9 above) using pin 33 as the audio source or the speaker can get flat audio using pin 33 as the audio source. This is a total of 3 different types of audio configurations for the speaker. A drawing is worth 1000 words.
• The internal option boards have their own built in audio output connect/disconnect control gates so they do not put a load on any audio path when the option is not in use (i.e. they do not interferer with the radio audio, other internal or external options audio). These control gates are configured using serial data commands via the Systems 9000 communication bus.
• The pre-emphasis de-emphasis explanations are in the glossary.
• Both pre-emphasis and de-emphasis tend to distort data when used with high speed modems (especially 9600 baud modems), so neither one is used for fast data modes. PL and DPL are also not used during low or high speed data transmissions, or when pin 3 Option Tx Audio is used to transmit flat audio (like when Securenet is being transmitted).

SYNTOR X 9000 Personality Board Jumpers
Jumper	HLN4925A	HLN5299A	HLN5299B	Description
JU100	x			Non-Securenet (* out for low band)
JU100-JU105		x	x	Non-Securenet / Low Band
JU101-JU104	x	x	x	Low Band / 800 MHz
JU102-JU103	x	x	x	VHF / UHF
JU200-JU201	x	x	x	Non-Securenet / Securenet (squelch)
JU500	x	x	x	Test Mode
JU501-JU502	x	x	x	2k / 8k EEPROM (32 / 64+ modes max)
JU503				Low Band Tx Buffer (see the notes below)
JU504-JU505	x	x	x	Conventional / Trunking
JU506-JU507		x	x	U501 addressing
JU508-JU509		x	x	+ 5 V. / Gnd. U500 "MP0" pin
JU510-JU511		x	x	+ 5 V. / Gnd. U500 "MP1" pin
JU512-JU513		x	x	U502 addressing
JU514-JU515		x	x	2k or 8k / 16k U502 EEPROM
JU516			x	UHF Trunking

• X means this jumper is present on the indicated revision Personality Board.
• The highlighted jumpers are found on the solder side of the Personality Board under a shield. They are zero ohm chip resistors that are soldered in place.
• All of the HLN4925A jumpers are pairs that share a common center pin except for JU100 and JU500.
• All of the HLN5299A jumpers are pairs that share a common center pin except for JU500.
• All of the HLN5299B jumpers are pairs that share a common center pin except for JU500 and JU516.
• When jumpers share a common center pin, the jumper must be placed from the center pin to one or the other outside pin (you can also not install the jumper at all). All 3 common pins are never jumpered together. For example: JU200 can be installed or JU201 can be installed, but JU200 and JU201 should never be installed at the same time (it would take a special 3 pin jumper not provided with the radio or circuit modification to make this mistake anyway). The jumper locater drawings show the common center pin as a white circle and the outside pins as dark circles (or dark squares for the chip resistor jumpers).
• JU100 is removed for high deviation, wide bandwidth transmissions like Securenet to prevent leakage through transistor Q100 from distorting the modulation signal.
• JU101, JU102, JU103 and JU104 tailor the audio response of the reference modulation line for each different band of radio.
• JU105 bypasses C105 for better performance with the low band radio's reference modulation circuit. The low band has a physically different reference modulation circuit than any other Syntor X 9000 radio, so this bypass is only safe on the low band radios.
• JU200 and JU201 change the squelch circuit response characteristics.
• JU500 is only used when the radio is being serviced on the test bench (it must be installed before the radio is powered on to enter test mode). One thing it does is prevent the radio's watchdog timer from issuing resets to the radio (to allow troubleshooting and repair of problems causing excessive radio watchdog resets). It also allows the volume control to be adjusted in much finer steps than normally allowed (for SINAD measurements, etc.). Test mode is not suitable for normal operation.
• JU502 on the HLN4925 does not support a 16k EEPROM (see next paragraph for 8k upgrade replacements).
• JU502 and JU515 only allows the use of 16k of a standard 32k 28256 or 28C256 EEPROM chip. As far as I know, no 16k 28128 or 28C128 EEPROM chips were ever manufactured. The conventional RSS does not seem to be able to use the added 8k of space (16k total), so it must be used by the trunking Syntor X 9000E or a SPxx radio version, if at all. The 32k EEPROM chip can also be used as an 8k EEPROM (all jumpers are set for the 8k EEPROM) if you can not locate an 8k upgrade part.
• The HLN4925A has J503 next to JU102. JU503 looks like a jumper, but both pins are shorted together by a printed circuit board trace and it is actually Tx keyed 9.4 volts. It appears to be a power connector for the low band radio Tx buffer. The HLN5299 printed circuit trace layout was changed and the old J503 disappeared. This does offer a clue to the missing JU503 below.
• JU503 could not be located on either version of the HLN5299 Personality Board even though it's on the schematic. According to the schematic this is not really a jumper (see above). This part of the HLN5299B schematic is the same as the HLN4925A schematic except for the J503 label being changed to JU503. Also, JU503 suddenly appears in the jumper table as "Low Band Tx Buffer" in the HLN5299B schematic. I believe JU503 is an error in the manual and was actually deleted, but I would like to know where the low band radio gets power for the Tx buffer on the HLN5299 Personality Boards (I suspect the low band Common Circuits Board has this power connection)?
• The HLN4925A is an early version of the Syntor X 9000 Personality Board. There is some confusion in the documentation about JU504 and JU505 on this board. A manual revision shows this board with these two jumpers added, but the revised parts list does not list a jumper for either one. Since I do not have a real A revision board to check, I added these jumpers to the table. I did find these jumpers on a HLN4925D Personality Board.
• Here is the jumper locator for the HLN4925A Personality Board
• Here is the jumper locator for the top of the HLN5299A Personality Board.
• Here is the jumper locator for the bottom of the HLN5299A Personality Board.
• Here is the jumper locator for the top of the HLN5299B Personality Board.
• Here is the jumper locator for the bottom of the HLN5299B Personality Board.

Personality Board J301 Internal Option Board(s) Socket:

1		20
2		19
3		18
4		17
5		16
6		15
7		14
8		13
9		12
10		11

The J301 Socket pin out is shown above as seen from the top of the Personality Board (there is a notch between pin 1 and pin 20 on the socket).

20	18	16	14	12	10	8	6	4	2
19	17	15	13	11	9	7	5	3	1

P301 Ribbon Cable connector as seen from the side of an Internal Option Board.

J301 Internal Option Board Connector
Socket Pin #	Cable Pin #	Description
1	20	Busy (Input/Output)
2	18	Tx Data (Output)
3	16	Switched + 5 Volts (Input)
4	14	Unswitched + 5 Volts (Input)
5	12	Digital Ground
6	10	Analog Ground
7	8	Switched + 9.6 Volts (Input)
8	6	VAG
9	4	Detected Audio (Input)
10	2	Option Rx Audio (Output)
11	1	Mic. Hi (Input/Output)
12	3	Option Tx Audio (Output)
13	5	Internal Securenet Code Storage Battery (Input) / Spare
14	7	Filtered Audio (Input)
15	9	JU504 - Xtal Shift / JU505 - Trunking / Spare
16	11	Internal Securenet Write Enable (Input)
17	13	Internal Securenet KID (Input)
18	15	Internal Securenet KEY (Input)
19	17	Reset (Input/Output)
20	19	Rx Data (Input)

• The input and output notes in parenthesis are with respect to the Internal Option Boards.
• The socket is a 20 pin Dual In-Line Package (DIP) socket.
• The 20 wire ribbon cable is flat with one or two 20 pin Internal Option Board connectors, depending on the part number.
• Both the 20 pin DIP J301 socket and ribbon cable have different pin numbers for the same wire/connection. It can be very confusing, unless you are aware of it and looking for it. Different manuals use one or the other pin out, which can be confusing all by itself. Use the above table to translate the socket and ribbon cable pin numbers.
• The VAG is a special analog ground voltage. It is about 1/2 of the + 9.6 volt supply (i.e. about + 4.8 volts). This is used by Op-Amps with a single + 9.6 volt power supply, to bias the amp so it can reproduce both positive and negative analog signal levels. Without the VAG, Op-Amps would require both plus and minus voltage power supplies for these types of analog signals.
• There is an optional internal Securenet Code Storage Battery located on the radio drawer Common Circuits Board (if it is installed).
• Socket pins 16, 17 and 18 are only used when an Internal Securenet Board is installed inside the radio drawer. A special HKN4256A radio cable with a keyloader port is used to access these three socket pins. Special U501 firmware may be required to use a radio drawer internal Securenet board.
• See the Systems 9000 page for an explanation of the Tx Data, Rx Data, Busy and Reset lines.
• Socket pin 15, Xtal Shift, is not supported by many of the conventional Internal Option Boards.
• This J301 socket is also found on the External Options Housing circuit board, Siren/PA circuit board and Advanced Securenet Physical Security Housing circuit board. Socket pin 15 is a Spare line on all these other circuit boards. Socket pin 13 is also a Spare line, except on the Securenet Physical Security Housing (this optional battery is located inside the Securenet Housing).
• The Vehicle Repeater System (VRS) uses this socket to connect the VRS circuit board. The VRS circuit board can be installed inside an External Options Housing or a Siren/PA Housing (a special low profile shield is required for the Siren/PA Housing).
• This drawing shows a functional block diagram with the J301 socket and its major connections.

Common Circuits Boards:

Here is a part number list of the Syntor X 9000 Common Circuits Boards.

• HLN5222B - Low Band.
• HLN4906A/B - VHF.
• HLN4905A - UHF (early version radios).
• HLN4905B - UHF (all X 9000 & X 9000E range 1 - 78/100 Watt Radios).
• HLN5152B - UHF (X 9000 range 2, 3, 4 and 5 - 30 Watt Radios).
• HLN5448A - UHF (X 9000E range 2 - 100 Watt Radios).
• HLN4971A - 800 MHz.

The common circuits board has the Tx power and Tx current limit adjustment controls on it.

The Low Band and VHF Common Circuits Boards have no jumpers. The UHF boards have jumpers JU900 and JU901 and the 800 MHz boards have jumpers JU950 and JU951. No information is provided on any optional settings or configurations for these jumpers so they do not appear to be meant to be changed.

Some Syntor X 9000 radios have a ground jumper wire attached to the common circuits board and the chassis. Radios with this jumper wire cannot be used in a positive ground installation. These radios are supposed to have a sticker inside on the chassis near the common circuits board that has a negative ground installation only warning. If one of these radios is installed in a positive ground vehicle, exepct the radio to be heavily damaged (PC board copper traces on the common circuits board will probably be vaporized as the main 40 amp power fuse blows).

Control Head Circuit Board Pin Out:

J1 DB-50 connector Systems 9000 connector viewed from back of the control head.

Spectra Systems 9000 Control Head Connector
Control Head DB-50 J1 Pin #	VIP / DEK	Mic.	Radio	Radio Pin Description
1	x			VIP Out 2 (Output)
2	x			VIP Out 1 (Output)
3	x			VIP In 2 (Input)
4	x			VIP In 1 (Input)
5	x/x			DEK Data Out (Output)
6				Pin Removed
7		x		Mic. Low (Input)
8		x		Mic. Hi (Input)
9				Pin Removed
10			x	Speaker Audio Low (Output) (BLK/GRN Wire)
11			x	Speaker Audio Low (Input)
12			x	Mic. Hi (Output)
13			x	Mic. Low (Output)
14			x	BATT- (shorted to Pin 31)
15			x	Ignition + (Input) (Orange wire)
16			x	Analog Ground
17			x	Bus + (Input/Output)
18	x			Switched B+ (Output)
19	x			Switched B+ (Output)
20	x			Digital Ground
21	x			Digital Ground
22				Pin Removed
23		x		PTT/HUB Reference (Input)
24		x		PTT (Input)
25				Pin Removed
26			x	Reset (Input/Output)
27			x	Emergency (Output) (see notes below)
28			x	Spare 1
29			x	Spare 2
30			x	BATT+ (shorted to Pin 47)
31			x	BATT- (shorted to Pin 14)
32			x	Ignition - (Input)
33			x	Busy (Input/Output)
34	x/x			VIP Out 3 (Output) / DEK Strobe (Output)
35	x/x			Switched B+ (Output)
36	x/x			Digital Ground
37	x/x			VIP In 3 (Input) / DEK Data In (Input)
38	x/x			DEK Clock (Output)
39				Pin Removed
40		x		Hang Up Box (HUB) (Input)
41		x		Switched B+ (Output)
42				Pin Removed
43			x	Speaker Audio Hi (Output) (BLK/ORG Wire)
44			x	Speaker Audio Hi (Input)
45			x	Detected Audio (Input) (N.C.)
46			x	Option Tx Audio (Output) (N.C.)
47			x	BATT+ (Input) (Green Wire) (shorted to Pin 30)
48			x	Switched B+ (Output)
49			x	Digital Ground
50			x	Bus - (RS-422 Input/Output)

• N.C. is an abbreviation for No Connection.
• The input and output notes in parenthesis are with respect to the control head.
• Since these control heads have a single large DB-50 connector that was divided into three sections, check boxes were added to help easily identify the Radio, Microphone, VIP and DEK Expansion connector pins.
• The yellow highlighted pins with a wire indicated in the description do not go to the radio. These wires are only attached to the control head connector (these wires are not present on optional rear control head cable).
• For negative ground cables, the green wire (BATT+) and orange wire (Ignition+) that are attached to the control head side of the radio cable need to be fused and attached to the battery + voltage. The green wire provides power to the control head. The orange wire is used in conjunction with the RSS programming. If the orange wire is attached to an automotive circuit that is only on when the ignition key is on, the radio can be programmed to only allow transmitting when the ignition key is on.
• The default VIP port automatically switches into a DEK Expansion port configuration whenever a DEK is programmed into the radio's code plug. The DEK or DEKS provide VIP II connection pins.
• Keep in mind, the J1 pin assignments can be changed with the control head chip resistor jumpers in SP control heads. The SMD control heads have internal jumpers that can reconfigure some of the control head pins. Other models of control heads should be checked for physical modifications (i.e. cut PC traces, wire jumpers and extra components soldered point to point on the PC board). Expect to find modifications on control heads with a kit number below the model number.

SYSTEMS 9000 HCN1033, HCN1041, HCN1045 and HCN1047 Control Head Board Jumpers
Jumper	HLN4709A display HLN4709A control	HLN4709D HLN4896C display HLN4709D control	HLN5104D display HLN5014D HLN5014E control	Description
JU1	x	x	x	out (for future expansion)
JU2	x	x	x	in (for 6301X Micro)
JU3	x			out (selects internal mP ROM)
JU4	x	x	x	in for 32 Modes	out for 64+ Modes
JU5	x	x	x	out for 32 Modes	in for 64+ Modes
JU6	x	x	x	in (selects internal mP ROM)
JU20		x	x	in (switched +12 to mic pin 41)
JU22		x	x	in (PTT/HUB Ref)

• All jumpers are located on the Control Board. The display boards are shown with the Control Boards they are used with except for the HLN4896C. This Display Board is used in the HCN1032 control head and its Control Board is not shown. All of these jumpers are soldered in zero ohm chip resistors. The HLN4896C and HLN4709D Display Boards are identical except for their part number and are completely interchangeable. It is the HLN4896C and HLN4709D Control Boards that are different and incompatible.
• The grayed out jumpers are not present or not used.
• The control head firmware is located inside the microprocessor IC U1. Even though there are jumpers for an external firmware ROM, there does not appear to be anyplace to plug an external ROM into the Control Board. The processor chip U1 is NLA from Motorola and was factory programmed so take real good care of the ones you have. There is also a special version of U1 that is used for MDC-1200 signaling.
• All of these boards have parts list jumpers that do not match the boards, schematics or jumper table. So the jumpers on the parts lists have been ignored.
• The HCN1033 control heads use the HLN4907 series boards.
• The HCN1041B control head uses the HLN4897 series boards.
• The HCN1045 and HCN1047 control heads use the HLN5104 series boards.
• There are probably other Systems 9000 control heads that use these boards that I do not have the control head part numbers for.
• Here is the jumper locator for the bottom of the Control Board. Use this locator for all of the above Control Boards, just ignore the jumpers for different models that are grayed out in the table.
• Here is the parts locator for the top of the Control Board. Use this locator for all of the above Control Boards.

SYSTEMS 9000 HCN1063A and HCN1073A Control Head Board Jumpers
Jumper	HLN5464A display HLN5464A control	HLN6284A display HLN6284A control	HLN6284C display HLN6284C control	Description
JU001	x	x	x	in (A+ J103-47 to Power Switch)
JU002	x	x	x	out (special applications)
JU003	x	x	x	in (Sw B+ to J103-41)
JU004	x	x	x	out (special applications)
JU005	x	x	x	in (A+ J103-47 to Power Switch)
JU007	x	x	x	in (enable OPT 4 LED - over display)
JU008	x	x	x	out (special applications)
JU009	x	x	x	out (special applications)
JU010	x	x	x	out (special applications)
JU011	x	x	x	out (special applications)
JU012	x	x	x	out (special applications)
JU013	x	x	x	out (special applications)
JU014
JU015
JU016	x	x	x	out (special applications)
JU017	x	x	x	out (special applications)
JU018	x	x	x	in (Speaker Hi J103-43 to J103-44)
JU019	x	x	x	in (Speaker Hi J103-43 to J103-44)
JU020	x	x	x	in (Mic. HUB enable J103-40)
JU021	x	x	x	out (special applications)
JU022	x	x	x	out (special applications)
Unknown			x	?? undocumented jumper

• The highlighted jumpers are located on the Display Board. All other jumpers are located on the Control Board. The Display Boards are shown with the Control Boards they are used with. All of these jumpers are soldered in zero ohm chip resistors. All of the "special applications" jumpers are explained in supplemental manuals provided with the modified control heads.
• Display Board jumpers JU007 out and JU008 in is used by the Advanced Securenet Physical Security Housing. It allows the Securenet Board to directly control the Option 4 LED above the vacuum fluorescent display.
• JU001 and JU005 are in parallel.
• JU018 and JU019 are in parallel.
• JU014 and JU015 are on the HLN6284A parts list, but apparently not on the schematic or PC layout so they are shown grayed out.
• An 8 kilobyte soldered in SMD EEPROM U0005 is the only one available on these control heads so they are already 64+ mode compatible.
• The control head firmware is located inside the SMD PROM IC U0007. There is HVN4026A firmware just for the Syntor X 9000.
• Both of the above control heads use Surface Mount Device (SMD) flat package Integrated Circuits (ICs).
• The HCN1063A (later version) control head uses the HLN5464A (SMD).
• The HCN1073A (latest version) control head uses the HLN6284A (SMD).
• The HCN1062A (32 modes only) uses boards I do not have any documentaton for.
• Some control heads now use a new HLN6284C Control Board that I have not been able to find any Motorola Documentation for. There is a new jumper on this board and other jumpers have been moved. Here is the jumper locator for the bottom of the new HLN6284C Control Board. The unknown jumper connects to pin 27 on the control head connector (this is normally not connected).
• Here is the jumper locator for the bottom of the Control Board and the jumper locator for the bottom of the Display Board. Use this locator for both of the above revision A Control Boards.
• Here is the parts locator for the top of the Control Board. Use this locator for both of the above Control Boards.

DEK Circuit Board Pin Out:

J1 connector viewed from back of the DEK.

Direct Entry Keyboard Connector
DEK DB-50 J1 Pin #	EXP Out	EXP In	VIP II In/Out	Radio Pin Description
1	x			N.C.
2	x			N.C.
3	x			N.C.
4	x			N.C.
5	x			Data Out (Output)
6				Pin Removed
7		x		Ground - VIP Digital Ground
8		x		Data In (Output)
9				Pin Removed
10			x	Ground
11			x	Ground
12			x	Ground
13			x	N.C.
14			x	N.C.
15			x	VIP In 1 (Input)
16			x	VIP In 2 (Input)
17			x	VIP In 3 (Input)
18	x			N.C.
19	x			N.C.
20	x			N.C.
21	x			N.C.
22				Pin Removed
23		x		Clock (Input)
24		x		Strobe (Input)
25				Pin Removed
26			x	N.C.
27			x	N.C.
28			x	N.C.
29			x	N.C.
30			x	N.C.
31			x	N.C.
32			x	N.C.
33			x	N.C.
34	x			Strobe (Output)
35	x			Switched B+ (Input)
36	x			Digital Ground
37	x			Data In (Input)
38	x			Clock (Output)
39				Pin Removed
40		x		Data Out (Input)
41		x		Switched B+ (Input)
42				Pin Removed
43			x	VIP Out 1 (Output)
44			x	VIP Out 2 (Output)
45			x	VIP Out 3 (Output)
46			x	N.C.
47			x	N.C.
48			x	Switched B+ (Output)
49			x	Switched B+ (Output)
50			x	Switched B+ (Output)

• N.C. is an abbreviation for No Connection.
• The input and output notes in parenthesis are with respect to the DEK.
• Additional information on the DEK is located on this page.
• Since the DEKs have a single large DB-50 connector that was divided into three sections, check boxes were added to help easily identify the VIP II input/output, Expansion Input and Expansion Output pins. The Expansion Input and Expansion Output pins are used to daisy chain up to 3 DEKs, starting with the Systems 9000 control head VIP port to connect the first DEK.
• The optional VIP hardware uses a 15-80212L01 VIP II Connector Housing.
• A HKN4273A (old part # 3080248L01) DEK cable is used to attach a DEK to a compatible control head or to attach to extra DEKs (up to 3 DEKs total).

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PL, Private Line, DPL, Digital Private Line, MPL, Talkaround, MDC-600, MDC-1200, MVS-20, Securenet, Smartnet, Privacy Plus, Trunked X2, Trunked X3, Touch Code, Quick Call II, Channel Scan, Talkback Scan, System 90, System 90*s, Systems 9000, Mitrek, Micor, Spectra, Spectra II, Astro Spectra, MataTrac, Syntor, Syntor X, Syntor X 9000 and Syntor X 9000E are trademarks of Motorola Inc.