System 90*s 8 Mode Scan Cable Pinout Example
		- Description
		- J1 Connector
		- Black 22 Pin Connector
		- Gray 22 Pin Connector
		- Light Purple 22 Pin Connector
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Here is a typical negative ground pinout for a System 90*s TRN4338A (8 mode select with scan and display) and TRN4395A (volume, squelch and power) control head . This is a 8 mode control head with scan and display. The pinout is for the radio connector J1, control head conectors 22 pin black, 22 pin gray and 22 pin light purple. There are also wires that just connect from one control head connector to another control head connector.

The TRN4338A display is not designed for more than 8 modes, but there is trick to jumper it to display up to 32 modes by moving jumper JU11 (orange wire) to the JU7 position A. However, the false mode 32 display will be a problem. This trick was used in the standard Syntor X configurations using the TRN4334A 5 mode and TRN4330A 2 mode version of this board (used for 10 and 4 mode control heads when combined with a 2 bank Talkaround select board). Because these 5 and 2 mode boards do not have a mode 8 display light, the false mode 32 display was never a problem.

Cable's J1 connector front view pin out (cable on left side).

J1 SYSTEM 90*s PINOUT
J1	22 pin BLACK	22 pin GRAY	22 pin Lt. PURPLE	J1 DESCRIPTION
A				A+ (Red Wire)
B				A- (jumpered to J1 pins 8 and 10) (Black Wire)
J1-1		11		Control Head Strobe
J1-2	16			Detected Audio
J1-3	20			Volume - Receiver Audio
J1-4	22			PTT
J1-5	14			PTT Reference
J1-6				Squelch Tail
J1-7				Securenet Modulation
J1-8		2		Switched B- (jumpered to J1 pins 10 and B)
J1-9				Switched B+ to Accessories
J1-10		2		Chassis (jumpered to J1 pins 8 and B)
J1-11		10		Mode 12
J1-12			3	Mode 5
J1-13			8	Mode 1
J1-14	21			Shield
J1-15		1		Switched B+
J1-16			11	Mode 6
J1-17			7	Mode 2
J1-18
J1-19		9		Mode 10
J1-20				Transmit Indicator
J1-21				Transmit Mode
J1-22	6			Speaker Audio Low
J1-23			10	Mode 7
J1-24			6	Mode 3
J1-25			2	Mode 4
J1-26		8		Mode 9
J1-27	11			Mic. High
J1-28	17			Squelch
J1-29			5	Mode 8
J1-30		7		Mode 11
J1-31			1	Channel Scan Enable {JU1 removed}
J1-32	4			PL/DPL Disable
J1-33		3		Display Enable {JU14 removed}
J1-34				Sidetone In
J1-35				EMS Mute
J1-36				Transmit DVP
J1-37	3			Speaker Audio High

• Important notice: If you have a HLN4760C Personality Board J1-33 is a DVP-XL line, not a Display Enable line. In this case JU14 should be installed and J1-33 should not be connected to anything except a DVP-XL control head (if you are using one) or to pin 7 of of the Black 22 pin connector (which is not connected inside the control head). Also jumper J21 should be in the A position. If it is in the B position then J1-5 becomes a DVP-XL line and it should only be connected to a DVP-XL control head. The example in the above table works with all other Personality Boards including the HLN4257 and TRN8861 which do not have jumper JU14.
• Sometimes a J1-34 Sidetone wire will be installed in a spare 22 pin connector that is not used and tied back to the cable. Sidetone is only hooked up inside the radio on "VXJ" models.

22 pin System 90*s connector rear view pin out.

BLACK 22 PIN CONNECTOR SYSTEM 90*s PINOUT (TRN4340A)
PIN #	22 pin GRAY	22 pin Lt. PURPLE	6 pin BLUE	J1	DESCRIPTION
1	12				Switched B+
2					Hang Up Box Gnd.
3				37	Speaker Audio
4-15				32	PL/DPL Disable
5					N.C.
6-9				22	Speaker Audio Low
7					(Display Enable)
key
9-6	13				(Chassis)
10					(Shield)
11				27	Mic. High
12					A+ Unswitched (Green Wire)
13					A+ Ignition Switch (Orange Wire)
14				5	PTT Reference
15-4					Hang Up Box Switched
16				2	Detected Audio
17				28	Squelch
key
19-21					(Shield)
20				3	Volume - Receiver Audio
21-19				14	Shield
22				4	PTT

• N.C. - No connection.
• When two pin numbers are separated by a dash (i.e. 4-15) it indicates the circuit board the connector plugs into shorts these pins together. Because the shorts are provided by the circuit board, they are missing when the connector is removed and the radio may not function until all the connectors are correctly installed.

GRAY 22 PIN CONNECTOR SYSTEM 90*s PINOUT (TRN4344A)
PIN #	22 pin BLACK	22 pin Lt. PURPLE	6 pin BLUE	J1	DESCRIPTION
1-12				15	Switched B+
2-3-13				8	Switched B-, J1-10 Chassis
3-2-13				33	(Switched B-)
key
5
6
7-17				30	Mode 11
8-18				26	Mode 9
9-19				19	Mode 10
10-20				11	Mode 12
11-22				1	Control Head Strobe
12-1	1				(Switched B+)
13-2-3	9				(Switched B-)
key
15
16
17-7					(Mode 11)
18-8					(Mode 9)
19-9					(Mode 10)
20-10					(Mode 12)
21					Mode Strobe
22-11					(Control Head Strobe)

• When two pin numbers are separated by a dash (i.e. 8-18) it indicates the circuit board the connector plugs into shorts these pins together. 2-3-13 indicates all three pins are shorted together by the circuit board. Because the shorts are provided by the circuit board, they are missing when the connector is removed and the radio may not function until all the connectors are correctly installed.
• Please note the mode lines, control head strobe and power lines have duplicate connections. These are used to daisy chain these signals to additional System 90*s accessories (i.e. MPL select, operator non-priority scan select, etc.).

Lt. PURPLE 22 PIN CONNECTOR SYSTEM 90*s PINOUT (TRN4344A)
PIN #	22 pin BLACK	22 pin GRAY	6 pin BLUE	J1	DESCRIPTION
1				31	Channel Scan Enable
2-12				25	Mode 4
3-14				12	Mode 5
key
5-16				29	Mode 8
6-17				24	Mode 3
7-18				17	Mode 2
8-19				13	Mode 1
9
10-21				23	Mode 7
11-22				16	Mode 6
12-2					(Mode 4)
key
14-3					(Mode 5)
15
16-5					(Mode 8)
17-6					(Mode 3)
18-7					(Mode 2)
19-8					(Mode 1)
20
21-10					(Mode 7)
22-11					(Mode 6)

• When two pin numbers are separated by a dash (i.e. 8-19) it indicates the circuit board the connector plugs into shorts these pins together. Because the shorts are provided by the circuit board, they are missing when the connector is removed and the radio may not function until all the connectors are correctly installed.
• Please note the mode lines have duplicate connections. These are used to daisy chain these signals to additional System 90*s accessories (i.e. MPL select, operator non-priority scan select, etc.).

• All of the yellow highlighted signals do not connect to the radio. They are external power hookups, interconnections between control head boards and accessories (i.e. the hangup box).
• When two pin numbers are separated by a dash (i.e. 14-3) it indicates the circuit board the connector plugs into shorts these pins together. 2-3-13 indicates all three pins are shorted together by the circuit board. Because the shorts are provided by the circuit board, they are missing when the connector is removed and the radio may not function until all the connectors are correctly installed.
• All boards must have their internal jumpers set correctly.

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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, MataTrac, Syntor, Syntor X, Syntor X 9000 and Syntor X 9000E are trademarks of Motorola Inc.