- 3-1 -
ELECTRICAL ADJUSTMENT PROCEDURES
1. Servo Adjustment
1) PG Adjustment
Test Equipment
Adjustment And Specification
a) OSCILLOSCOPE
b) NTSC MODEL : NTSC SP TEST TAPE
MODE
PLAY
Adjustment Procedure
a) Insert the SP Test Tape and play.
Note - Adjust the distance of X, pressing the Tr) or Tracking(-) when the ATR is blink after the
SP Test Tape is inserted.
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-
tance (time difference), which is from the selected A(B) Head point of the H/SW(W373, W374) signal to
the starting point of the vertical synchronized signal, to 6.5H – 0.5H (416 s, 1H=64 s).
PG Adjustment Method
a-1) Payback the SP standard tape
b-2) Press the 1 key on the Remote controller and the PLAY key on the Front Panel the same time,
then it goes in to Tracking initial mode. (Note : PAL Model 1 key on Remote controller)
c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
CONNECTION
WAVEFORM
V.Out
H/SW(W373, W374)
R/C TRK JIG KEY
6.5 – 0.5H
MEASUREMENT POINT
ADJUSTMENT POINT
SPECIFICATION
V.Out
H/SW(W373,W374)
OSCILLOSCOPE
CH1 CH2
V.out
H/SW
R/C KEY
(W373, W374)
H/SW
Composite
VIDEO
SECTION 3. VCR PART
Содержание XBS341 Series
Страница 1: ...SERVICE MANUAL MODELS XBS341...
Страница 10: ...2 1 SECTION 2 AUDIO PART...
Страница 12: ...3 2 VCR ELECTRICAL TROULBESHOOTING...
Страница 13: ...3 3...
Страница 27: ...SECTION 4 MECHANSIM OF VCR PART...
Страница 39: ...4 12...
Страница 41: ...4 14...
Страница 51: ...4 24...
Страница 58: ...5 1 DVD ELECTRICAL TROUBLESHOOTING 1 Test debug flow SECTION 5 DVD PART...
Страница 59: ...5 2...
Страница 60: ...5 3...
Страница 61: ...5 4...
Страница 62: ...5 5...
Страница 63: ...5 6...
Страница 65: ...5 8 3 RS232 waveform during procedure Downloading 4 Flash R W enable signal during download Downloading...
Страница 66: ...5 9 2 SDRAM CLOCK 1 MT1379 main clock is at 27MHz X501 3 TRAY OPEN CLOSE SIGNAL 1 Tray open close waveform...
Страница 67: ...5 10 2 Tray close waveform 3 Tray open waveform...
Страница 68: ...5 11 4 SLED CONTROL RELATED SIGNAL NO DISC CONDITION 5 LENS CONTROL RELATED SIGNAL NO DISC CONDITION...
Страница 69: ...5 12 6 LASER POWER CONTROL RELATED SIGNAL NO DISC CONDITION 7 DISC TYPE JUDGEMENT WAVEFORM...
Страница 70: ...5 13...
Страница 71: ...5 14 8 FOCUS ON WAVEFORM...
Страница 72: ...5 15 9 SPINDLE CONTROL WAVEFORM NO DISC CONDITION...
Страница 73: ...5 16 10 TRACKING CONTROL RELATED SIGNAL System checking...
Страница 74: ...5 17 11 RF WAVEFORM 12 MT1379 AUDIO OPTICAL AND COAXIAL OUTPUT ASPDIF...
Страница 75: ...5 18 13 MT1379 VIDEO OUTPUT WAVEFORM 1 Full colorbar signal CVBS 2 Y...
Страница 76: ...5 19 3 C 14 AUDIO OUTPUT FORM AUDIO DAC 1 Audio related Signal...
Страница 77: ...5 20 MEMO...
Страница 80: ...2 2 2 3 BLOCK DIAGRAM...
Страница 81: ...2 4 2 5 AUDIO SHEMATIC DIAGRAMS U COM SCHEMATIC DIAGRAM...
Страница 82: ...2 6 2 7 FUNCTION POWER SCHEMATIC DIAGRAM...
Страница 83: ...2 8 2 9 MAIN AMP SCHEMATIC DIAGRAM...
Страница 84: ...2 10 2 11 WIRING DIAGRAM...
Страница 86: ...2 14 2 15 PRINTED CIRCUIT DIAGRAM MAINAMP FRONT P C BOARD SOLDER SIDE...
Страница 87: ...2 16 2 17 MAINAMP FRONT P C BOARD COMPONENT SIDE...
Страница 88: ...2 18 2 19 FUNCTION POWER P C BOARD SOLDER SIDE...
Страница 89: ...2 20 2 21 FUNCTION POWER P C BOARD COMPONENT SIDE...
Страница 90: ...3 17 3 18 VCR SHEMATIC DIAGRAMS SYSTEM SCHEMATIC DIAGRAM...
Страница 91: ...3 19 3 20 A AUDIO V VIDEO SCHEMATIC DIAGRAM...
Страница 93: ...3 23 3 24 HIFI TUNER SCHEMATIC DIAGRAM...
Страница 94: ...3 25 3 26 A V JACK SCART SCHEMATIC DIAGRAM...
Страница 96: ...3 29 3 30 PRINTED CIRCUIT DIAGRAMS TUNER P C BOARD...
Страница 97: ...3 31 3 32 VCR P C BOARD...
Страница 98: ...3 33 3 34 VCR P C BOARD...
Страница 99: ...5 22 5 21 DVD PART SCHEMATIC DIAGRAMS MPEG SCHEMATIC DIAGRAM...
Страница 100: ...5 23 5 24 SERVO SCHEMATIC DIAGRAM...
Страница 101: ...5 25 5 26 AUDIO SCHEMATIC DIAGRAM...
Страница 102: ...5 27 5 28 INTERFACE SCHEMATIC DIAGRAM...
Страница 103: ...5 29 5 30 VOLTAGE SHEET IC TR...
Страница 104: ...5 31 5 32 PRINTED CIRCUIT DIAGRAM DVD P C BOARD SOLDER SIDE...
Страница 105: ...5 33 5 34 DVD P C BOARD COMPONENT SIDE...
Страница 107: ...MEMO MEMO...
Страница 109: ...MEMO MEMO...
Страница 115: ......