Electrical Adjustment - Sanyo HV-DX300A Service Manual

ELECTRICAL ADJUSTMENT

PLAYBACK PHASE
ITEM MODE
6.5H
PLAY
ADJUSTMENT
PCB : MAIN - TOP VIEW
TMI
BLOC
ADJUSTMENT PROCEDURE
1. Play back the test tape. (DP-2)
2. Set the oscilloscope to the CHOP mode. Connect CH1 to the SW PULSE (PIN 3 of PT01)
3. Connect CH2 to the ENVE signal (PIN4 of PT01)
4. Insert PATH JIG and press "REC" button on the remote control.
5. Check the position of the V-sync from the rising edge of the SW pulse.
±
(Standard : 6.5H 0.5H)
ADJUSTMENT
POINT
[REC] BUTTON
ADJUSTMENT PARTS
PRE-
AMP
TO PATH JIG
CHECK POINT
PIN 3 & PIN 4
OF PT01
PT01
4
TEST TEST
EQUIPMENT TAPE
OSCILLOSCOPE DP-2
MEASURING POINT
OSCILLOSCOPE
CH1 CH2
INPUT
SIGNAL
NO SIGNAL
PATH JIG