Connection Of Control Head Extender Cable; Mid Power Chassis; High Power Chassis; Control Head Connector Pin Signals - Motorola MCS 2000 Service Instructions Manual

Connection of Control Head Extender Cable

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C a u t i o n

Mid Power Chassis

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C a u t i o n
High Power
Chassis
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C a u t i o n
3-4 Test Equipment, Service Aids, and Tools
Failure to follow these instructions may cause severe damage to the
control head.
1. Place radio on bench with fins facing downward and away.
2. Remove the plastic cover. This position leaves the top side of the PC
boards fully exposed and the 18 pin connector (see Table 3-4) facing the
operator. Note that the 18 pin connector is offset left of center.
3. Place the control head directly in front of the chassis with the control
head and chassis sides aligned to each other. The two 18 pin connectors
MUST also be aligned. This means that the control head is sitting upright.
If the cable is plugged in upside down the control head will burn out.
4. With the colored side of the control head extender cable facing upward
all the way between the control head and the chassis connect the cable
to both control head and chassis 18 pin connectors.
1. Place radio on bench with fins facing downward and away.
2. Remove the polycarbonate cover. This position leaves the top side of the
PC boards fully exposed and the 18 pin connector (see Table 3-4) facing
the operator. Note that the 18 pin connector is offset right of center.
3. Place the control head directly in front of the chassis with the control
head and chassis sides aligned to each other. The two 18 pin connectors
MUST also be aligned. This means that the control head is upside-down
on the bench.
If the cable is plugged in upside down the control head will burn out.
4. With the colored side of the control head extender cable facing upward
all the way between the control head and the chassis connect the cable
to both control head and chassis 18 pin connectors. After the cable is
connected the control head can be uprighted.
Table 3-4 Control Head Connector Pin Signals
PIN NUMBER CONTROLLER SIGNAL
1 INTERNAL SPKR+
2
3
4
5
6
7 ANALOG_GND
8 HANDSET_AUDIO
9
PIN NUMBER
SPKR–
RESET
SB9600_BUS–
not used
not used
MIC/ON_OFF
CONTROLLER SIGNAL
10 DVP WE
11 KEY/FAIL
12 KID
13 DIGITAL_GND
14 SB9600_BUSY
15 SB9600_BUS+
16 not used
17 A+
18 SW_B+