Adjustment Procedures Test Points And Control Location; Main (Power Supply/Signal Process/Audio /Hi-Fi Audio/System Control/Servo/Timer) C.b.a; Operation C.b.a - Panasonic Omnivision VHS PV-7664 Service Manual

ADJUSTMENT PROCEDURES
TEST POINTS AND CONTROL
LOCATION
INPUT
LEVEL
4 pin
POWER
(Component Side)
Test Point Information
Test Point with a jumper wire across a hole in the P.C.B.
TP3001
TP6205
TP3002
CNR
PHASE
R3204
CNR
R3205
GAIN
R7007
12
U4901
4
1
Function of important Test Points on Main C.B.A.
TP3001 Video Signal to Jack
TP3002 REC/PB Video envelope signal
TP6001 Service Test Point (inhibit sensors)
TP6003 defeat Auto tracking function(connect to +5V(TP6009)
TP6009 +5V
TP6205 Head SW.

Operation C.B.A.

TV/VCR
CH DOWN CH UP
Main C.B.A.
VIDEO SIGNAL
PG SHIFTER
PROCESS
SECTION
TP6001
TP6003
SYSTEM CONTROL SECTION
-15-
J6004
R6201
UNLOADING
J6005
TP6009
(Component Side)
STOP PLAY
EJECT REC
/TIME