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
65
Summary of Contents for Quasar PVQ-1310
Page 25: ...Fig D5 25 ...
Page 29: ...6 2 2 Inner Parts Location Fig J1 1 29 ...
Page 30: ...6 2 3 EJECT Position Confirmation Fig J1 2 30 ...
Page 31: ...6 2 4 Grounding Plate Unit Full Erase Head and Cylinder Unit Fig J2 1 31 ...
Page 44: ...6 3 CASSETTE UP ASS Y SECTION 6 3 1 Top Plate Wiper Arm Unit and Holder Unit Fig K1 1 44 ...
Page 82: ...82 ...
Page 86: ...11 2 MECHANISM BOTTOM SECTION 86 ...
Page 87: ...11 3 CASSETTE UP COMPARTMENT SECTION 87 ...
Page 88: ...11 4 CHASSIS FRAME SECTION 1 A B C D E F G 88 ...
Page 89: ...11 5 CHASSIS FRAME SECTION 1 H I J K L 89 ...
Page 90: ...11 6 CHASSIS FRAME SECTION 2 90 ...
Page 91: ...11 7 PACKING PARTS AND ACCESSORIES SECTION A B C D E F G 91 ...
Page 92: ...11 8 PACKING PARTS AND ACCESSORIES SECTION H I J K L 92 ...
Page 113: ...R4021 ERJ6GEYJ473V MGF CHIP 1 10W 47K 113 ...
Page 115: ...R5515 ERDS2TJ332 3 3K 115 ...
Page 135: ...R885 ERDS2TJ104 100K 135 ...