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Basic Servicing Position (In case of needing to check on all blocks)
1.
Unplug the connector CP301, CP353 and CY757, then remove the TV/VCR Block from the set.
2.
Unplug the connector CP810, CP820 and CP850, then remove the Main PCB from the VCR Block.
3.
Connect as shown in the below figure using the Service Fixture.
• Connect the Syscon PCB to the Main PCB with the cable JG162A and JG162H.
• Connect the Syscon PCB to the CRT PCB with the cable JG162Y.
4.
Remove the Operation PCB from the set, then connect it with the Syscon PCB.
If necessary, connect CP353 (Earphone Input Terminal)
5.
Short circuit between TP1001 and Ground with the cable JG154.
(Refer to MAJOR COMPONENTS LOCATION GUIDE)
The EOT, BOT and Reel Sensor do not work at this moment.
6.
At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
JG162A
JG162H
To Main PCB
(CD810)
To Main PCB
(CD820)
To CRT PCB
(CD850)
Servicing Position for Main PCB (In case of needing to check on Main PCB)
• It's possible to get the Servicing Position without the extension Jig if you arrange the unit as shown below.
(But L503 connection can not be done, Degause circuit will not operate.)
• Be careful for the short circuit.
PREPARATION FOR SERVICING
Head Amp PCB
CP810
CP850
CP820
JG162Y
To Ground
VHS Tape
Main PCB
(Put the Tape under the FBT.)
IF PCB
Deck Chassis
TP1001
JG154
L503 (2 Pin)
C5-2
Syscon PCB
Operation PCB
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