D3-1
Read and perform this adjustment when repairing the
circuits or replacing electrical parts or PCB assemblies.
ELECTRICAL ADJUSTMENTS
1. BASIC ADJUSTMENT
CAUTION
When you exchange IC and Transistor for a heat sink,
apply the silicon grease on the contact section of the
heat sink. Before applying new silicon grease, remove
all the old silicon grease. (Old grease may cause
damages to the IC and Transistor.)
1-1: PG SHIFTER
CONDITIONS
MODE-PLAYBACK
Input Signal-Alignment Tape
INSTRUCTIONS
Connect CH-1 on the oscilloscope to TP1002 and CH-2
to TP4201.
Playback the alignment tape.
Press and hold the Tracking-Auto button on the remote
control more than 2 seconds to set tracking to center.
Adjust the VR1001 until the waveforms of the oscilloscope
measures 6.5
±
0.5(H) at both leading and trailing edges.
(Refer to Fig. 1-1-A, B)
1.
2.
3.
4.
6.5H
CH-1
CH-2
Fig. 1-1-A
CH-1
CH-2
6.5H
Fig. 1-1-B