Panasonic QUASAR PV-C1320, Руководство по обслуживанию

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7.3.7.4. HOW TO ENTER SERVICE MODE
1. Enter EVR adjustment mode.
2. Press DISPLAY key on the remote control for collapse
scan.
Note:
Before pressing DISPLAY key on the remote control for
collapse scan, select the desired control function and move
the shaded area to the value for adjustments you will
proceed.
Fig. E5-8
7.3.7.4.1. How to release from Service
Mode:
Press DISPLAY key again on the remote control.
7.3.8. PG SHIFTER ADJUSTMENT
Purpose: Determine the Video Head Switching
Point during Playback.
Symptom of
Misadjustment: May cause Head Switching Noise and/or
Vertical Jitter.
Test Point: TP3001 (TV/VCR Main C.B.A.),
TP6205 (TV/VCR Main C.B.A.)
Adjustment: PG SHIFTER (EVR)
Specification: T = 6 H±1 H (0.38 ms±0.06 ms)
Input: ----------
Mode: SP Playback
Equipment: Oscilloscope, VHS Alignment Tape
(VFMS0003H6)
1. Enter EVR PG Shifter Adjustment mode, refer to "HOW TO
ENTER EVR PG SHIFTER ADJUSTMENT MODE."
2. Connect the channel-1 scope probe to TP3001 and the
channel-2 scope probe to TP6205. Use TP6205 as a
trigger.
3. Adjust value so that the trailing edge of the head switching
pulse is placed 6 H±1 H (0.38 ms±0.06 ms) before the start
of the vertical sync pulse.
4. Release EVR PG Shifter Adjustment Mode.
The adjusted value will be written to Memory IC (IC6004).
Fig. E6
50
PVQ-1310 / PV-C1320 / PV-C1330W / VV-1300 / VV-1310W / PV-C1340 / PV-C1350W / PV-C2010 / PV-C2020 / PV-C2030W / VV-2000 / PV-C2060