Sharp VL-MC500U Service Manual Page 31
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31
VL-MC500U/K
4. White Balance adjustment
Test point LCD panel display surface Address VCR ADJ 584, VCR ADJ 586
Mode VCR AV input
Procedure 1) Input the white 40% signal to AV input.
2) Input the white 40% signal to the standard monitor, and adjust it to become equal to that of the screen.
Adjustment Standard monitor
rating
Remark Make this adjustment after 5-minute or longer aging.
Examples • During LCD monitor replacement. LCD Panel • During IC4401, IC705 replacement.
ADJUSTING THE MIC AMP CIRCUIT
1. EE level check
Measuring instrument Valve voltmeter Test point TL607, TL608
Mode P-ON (CAM) Adjustment rating -8dBs ± 3dB
Test signal 1kHz -21dBs sine wave
Procedure 1) Input 1kHz, -21dBs sine wave into TL1216(INT MIC L) and TL1242(INT MIC R).
2) Make sure that the signal level of TL607 Audio-L out and TL608 Audio-R out is within the standard
limits.
Remark
2. Frequency character check
Measuring instrument Valve voltmeter Test point TL607, TL608
Mode P-ON (CAM) Adjustment rating
(1kHz standard)
100Hz: -12dBs ± 3dB
10kHz: -1dBs ± 3dB
Test signal 100Hz, 10kHz -21dBs sine wave
Procedure 1) Input 100Hz, -21dBs sine wave and then 10kHz, -21dBs sine wave into TL1216(INT MIC L) and
TL1242(INT MIC R).
2) At this time make sure that the signal level of TL607 Audio-L out and TL608 Audio-R out is within the
standard limits (1kHz standard).
Remark
C973
Q903
TL908
C957
R5701
6
11
C5701
6
17
6
04
6
03
R5702
C5703
R5703
C5704
R5707
R5704
R5705
R5706
R5715
C5705
D403
C435
R436
C3708
R437
C447
D404
C3709
3
702
T
L
TL12
5
TL1263
SC120
1
TL1262
TL1271
TL1208
IC3702
TL1222
TL1270
TL1269
TL1223
TL1207
C3710 C3711 R3737
TL1224
FB3701
C5702
C1201
TL1238
TL1244
L3701
C3701
TL1236
R5717 R5716
TL1237
TL1246
TL1251
TL1202
IC5701
TL1201
TL1234
TL1249
C5706
TL1247
TL1248
TL1209
R5708 R5709
SC1202
TL1235
TL1243
FL5702
R3721
TL1240
R1952
C1203
TL1206
TL1242
TL1216
TL1245
TL1210
TL1214
L601
R600
L912
C956
C641
L911
C642
L907
C627
Q904
C955
L600
R641
C954
C632
R983
R643
Q910
Q909
C634
TL1216(INT MIC L)
EE level check
Frequency character check
TL1242(INT MIC R)
EE level check
Frequency character check
(Wiring board diagram: Main Side A)
(Wiring board diagram: Main Side B)
R704
R703
R
IC708
C727
C702
TL608
R649
R632
C630
R650
R633
R635
R626
R624
L909
C623
Q90
R657
R973
C945
C949
R972
L905
R5712
R5711
R5710
TL5703
TL5702
TL5701
VA603
TL600
R660
TL601
FB600
Q601
TL602
R601
VA601
R605
VA602
R658
VA600
C644
C946
R602
R654
TL603
R610
Q605Q603
R622
R623
C643C606
C603
R661
R611
Q602
C618
R613
C605
R653
R615
R617
R616
R614
R612
R608
R607
R609
R606
C609
C617
R620
R621
C608
R618
C615
R619
C613
C607
C614
C616
R631
C619
C621
C620
C622
C626
R630
R628
C625
C628
R627
R629
C629R625
IC600
R637
R636R634
R644
C633
R604R638
C624
R640
C637
R655
R642
C635
C631
R639
R603
C636
R656
R646
C640
C639
R648
Q604
C728
Q600
C645
C638
R753
C726
R744R651
R647
R659
C723
IC706
TL607
R652
R751
R752
C725
R645
C722
C719
X702
R746
R767
R764
R765
R766
R754
TL799
C724
R749
R750
C737
R748
C720
R756
C730
R763
R760
R761
R762
TL608
EE level check
Frequency character check
TL607
EE level check
Frequency character check
- SERVICE MANUAL 1
- 1. IMPORTANT SERVICE NOTES 2
- ATTENTION 3
- CAUTION 4
- 2. SPECIFICATIONS 6
- 3. PART NAMES 7
- 4. DISASSEMBLY OF THE SET 8
- VL-MC500U/K 10
- 6-2. Precautions 11
- 8. TAPE RUNNING ADJUSTMENT 15
- 8-4. Running rough adjustment 16
- 8-5. Final running adjustment 16
- (DISASSEMBLY AND REASSEMBLY) 17
- 9-4. Phase matching 19
- 9-5. Reassembly 20
- GREASE/OIL APPLICATION 23
- [TEST POINT] 26
- [Making adjustments] 27
- 1. PLL VCO adjustment 28
- 3. SHUT OFF adjustment 28
- 2. PCO D/A-C adjustment 29
- 1. PCO D/A-Y adjustment 29
- ADJUSTING THE LCD CIRCUIT 30
- ADJUSTING THE MIC AMP CIRCUIT 31
- ■ ID code is acquired 32
- 000A Iris offset adjustment 37
- Picture fails 41
- Blueback fails 41
- 12. SIGNAL FLOW DIAGRAMS 42
- 13. BLOCK DIAGRAMS 45
- - M E M O 51
- 14-12. LCD SCHEMATIC DIAGRAM 63
- 14-17. DAC SCHEMATIC DIAGRAM 68
- 14-25. CCD SCHEMATIC DIAGRAM 76
- 14-26. TG SCHEMATIC DIAGRAM 77
- 14-27. CDS SCHEMATIC DIAGRAM 78
- MAIN PWB 82
- CAMERA PWB 84
- CARD PWB 86
- INVERTER PWB 88
- HEAD AMP PWB 92
- Component Side SIDE A 92
- Wiring Side SIDE A 92
- Component Side SIDE B 93
- Wiring Side SIDE B 93
- 17. REPLACEMENT PARTS LIST/ 95
- EXPLODED VIEWS 95
- VL-SD20U 100
- LENS UNIT EXPLODED VIEW 111
- CABINET EXPLODED VIEW 112
- CASSETTE CONTROL EXPLOOD VIEW 113
- CAMERA UNIT EXPLOOD VIEW 113
- 18. PACKING OF THE SET 115
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