Kenwood TK-7180 Service Manual page 15

INSTALLATION / DISASSEMBLY FOR REPAIR
4. Insert the VGS-1 connector (CN1) into the TX-RX unit (B/3)
connector (CN403).
5. Perform step 3 to 6 of "9-1. Installing the GPS receiver"
described on page 14.
Note : You must setup using the KPG-92D.
TX-RX unit (B/3)
Solder land
GND (GND)
RXD1
TXD1
TXD2
RXD2 (DATA OUT1)
OPT1
OPT3
OPT4
OPT5
5E (+5V)
DTI
TCTL
TXO
AUDIH
OPT2
STON
RXEO
TXI
RXEI
OPT6
8C
Fig. 9-4
GPS receiver
VGS-1
CN1
CN403
Fig. 9-5
TK-7180/7189
1. Precautions on Disassembly
■ TX-RX PCB (TX-RX unit B/3) Disassembly
1. Remove all screws and antenna terminals on the TX-RX
PCB.
2. Rotate the bush of the power supply cable 90 degrees
counterclockwise as viewed from the rear of the chassis
( q ) and remove the power supply cable from the chassis
( w ).
3. When the speaker phone jack is pushed up, using your
finger, from the rear of the chassis ( e ), the TX-RX PCB is
removed from the chassis.
Note : The TX-RX PCB and D-sub PCB (TX-RX unit A/3) are
connected with a flat cable. Remove them carefully.
4. Turn the TX-RX PCB over and remove the flat cable from
the connector (CN427). ( r )
5. Remove the TX-RX PCB from the chassis.
Fig. 1-1
Fig. 1-2
CN427
Fig. 1-3
q
w
e
r
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