Service manual

28
VL-FD1U
VL-SD20U
[TEST POINT]
(Wiring board diagram: Main Side B)(Wiring board diagram: Main Side A)
(Wiring board diagram: Audio I/O Side B)
TL2650
R636
R635
C645
TL2647
TL2652
TL2637
TL2640
TL2638
TL2648
TL2644
TL2645
SC2601
TL2641
TL604
TL2639
TL2651
TL2636
TL2630
R640
TL2656
C637
R656
L602
C638
C651
C646
R650
R651
R647
C650
TL2628
TL2654
P2604
TL2653
R629
TL2627
R662
TL2629
C605
Q605
TL2659
TL2660
TL2601
TL2602
TL2603
TL2604
TL2609
TL2613
TL2614
TL2605
TL2615
SC2607
TL2608
TL2611
TL2626
TL2612
TL2620
TL2624
TL2618
TL2622
TL2616
TL2610
TL2625
TL2607
TL606
TL607
TL2617
TL2623
TL2619
TL2621
P602
TL2606
S1501
TL2631
Q603
R666
R655
C609
TL2649
L601
BAT2601
C607
TL602
C608
C610 C611
TL603
R617
R624
R613
R626
C634
C633
C632
C631
R654
R638
R628
C619 C621
R669
C620
BAT2602
TL2646
TL2655
TL2658
TL601
R687
R688
TL605
FB601
FB602
TL614
TL2661
C1501
TL616
FB603
TL617
TL615
Z2
TL2632
TL2657
TL2635
TL2634
TL2633
SC2606
TL605
EE level
Frequency character
TL601
EE level
Frequency character
TL604
EE level
Frequency character
TL603
EE level
Frequency character
J2401
C456
J7401 R4432
Q4432
J701
R4471
TL6723
TL6719
P6701
R1404
C1441
R1414
R1413
C1439
R1403
R1436
R1419
R1402
TL1411
C1438
R1438
R1442 C1436
TL1431
R1439
Q1434
R1440
C1437
R1441
C1432
R1453
C4483
TL6722
Q1431
L1431
C4472
L4481
C1440
C4484
R4401
R4402
Q4482
R4483
C4482
R4485
C4485
R4487
C4402
C4481
R4482
R4484
Q4481
R4486
R4488
C4401
Q4472
R4475
TL4403
TL4404
TL4402
R1982
C4473
Q4471
C4419C4417
R4474
R4416R4411
TL6720
TL6721
R4478
C4410
L4402
R4413R4410
R4489
R4473
R4476
R4470
R4477
R4412R4409
C4404
R4415C4406
L4401
C4449
R4423R4408
R4406
R4407
R4425
Q4433
C4412
R4424
R4436
C4448
R4405
R4420
R4404
C4405
R4435
R4421R4422
Q4434
L4461
R4437
C4461
Q4431
R4463
R4468
R4467
C4464
C4465
C4467
R4431
R4469
Q4461
R4461
R4457
R4465
R4462
Q4462
R4464
C460
C4462
C4463
FB456
R451R452
C462C463C465
C2402 R2403
FB2402
L2402
IC408
IC407
TL4451
D4452
C467
D4451
R4453
R4454
R4451
IC4461
R4455
C4452
C4451
X4451
L4451
C4466
TL4417
C4423
C4422
C4424
C4437
TL4413
C4420
R4460
TL4416
R4452 R4456
TL4410
C4411 C4433C4443
IC4401
TL4409
TL4405
TL4401
TL4407
R7806
R7807
C4421
C4430
R7800
R7802
R7804
C7801
C7805
TL4440
L7800
C7800
R4414
R7808
C7802
R7801
R7803
C7804
R7811
R7809
R7810
R7805
C1407
C1431
C1411
C1406
C1412
R1421
IC1431
D1401
C1417
IC1401
C1418
R1461
R1462
R1451
C1416
C1414
D1402
TL1412
R1416
C1410
R1406
R1417
C1413
Q1433
R1405
R1435
R1431C1433
C1401
Q1402
R1434R1433
Q1432
C1435R1437C1434R1432
R1418
R1407
L1403
Q1404
L1401
R1411
R1410
C1403
C1404
C1408
C1409
R1415
R1409
C1405
R1408
R1452
Q1405
Q1401
R1401
L1404
C7843
R7852
TL1410
C1415
R4403
C1402
C4403
IC7800
C7844
C7806
R7814
C7838
R7813
C7821
C7831
R7812
C7807
C7822
L1402
C7839
C7816
R7845
R7846
TL4436
L7801
R424
Q402
TL4438
R7827
C416
Q401
C7842
D7800
TL4437
C7815
R420
R7851
R7854
C7813
R422
R425
R427
R7855
C7837
R7843
R7842
R7841
C473
C472
R476
C474
TL4424
TL4422
R477 R478
TL4423
C4444
D471
C7810
C7808
C7836
C7811
TL4418
C7830
TL4425
D472
C7829 C7828
TL4428
C7825
R480
TL4426
R483
C411
C403
X401
TL4421
TL423
TL422
TL420
C419 R418 R417 C418
R426
R421
R423
C420
C427
C4454
R428
R429
R469
TL419
R470 R402
TL421
C4453
D403
TL418
C470 C428
TL405
TL404TL406
C435
TL449TL448
TL450
TL447
R436
R435
R438
R437
C447
FL403
C445
R472
C429 C436
D404
R403
C401
TL1912
C1920
C962
L1907
C4702
C468
L912
IC4701
C4701
D3401
R3484
R3405
Q3408
R3485
C3457
R3450
C3455
R3455
C3460
C3458
R3454
Q3404
R3479
IC3404
C3467
C3470
TL3408
R3478 R3470
R3453
C769
R3468
R3451
IC707
C3475R3452C3453
R3499
R3457C3459
R3469
TL1915
R3471
R3463
R3462
IC3403
C3456
C3452
L1904
FB1901
L3405
R462
R471
C1911
C433 C444
R405
TL416
R463
R413
TL417 R464 TL4439
C424
IC452
C422
TL403
TL410
TL411
R404
R419
C417
TL4411
TL4412
TL4414
TL412
R401
R430
C413
C412
R410
R409
C404
R407
R411 R412
R416
C405
IC401
R212
R414
L471
R210
C402
L401
R406
R474
C2800
R207
R473
R768
L2800
L2801
C408
C409
IC402
C2801
R7850
R7847
R2803
R7849R2804
R7853
TL2800
R7848
TL2801
C7841
IC2800
R7844
TL2802
C7840
FB7800
R745
R746
R748
TL4408
R7856
R7857
R215
L2804 C1804
C1810
C2810
C2807
R2802
R2801
L2803
R1818
R1801
R1803
TL1801
L1801
C2809
C2806
R2800
D1800
L2802
C766
Q704
C2808
C2805
C767
C1800
R770
C765
C2804
IC706
C2803 C2802
R408
C226
R201
C207
C201
C202
L201
TL203
TL4435
TL4441
C204 R211
TL204
TL214
TL211
TL212TL215TL213
R203
IC201
C216
R202
R204
R206
R205
TL206
C211 C223
C222
L402
TL208
TL207
TL4434
TL906
C449
C228
L203
C227
C1613
L202
C450
C448
R440 R441
C407
R453
X4452
R442
IC405
R4459 R4458
C453
C451
R445
R444
R443
C452
C4456
C4458
C751
R4450
R446
C757
R757
R771
C750
C754
R751
IC702
D702
C758
C763
R759
R758
Q1907
Q1908
R1918
TL1905
R1919
C1914
Q1913
R1939
R1923
C1915
R1924
IC1904
R1927R1928
TL1909
C1909
C1907
C1913
C983
TL1908
R1938
C1910
R1941
IC1901
D1901
R1937
Q910
Q9901
TL3406
C960
R1900
Z2
Q1900
Q951
C975
R3456
C3454
Q950
R903
R905
R904
C972
D950
C901
R906
R902
C900
R9913
TL910
TL909
TL908
L963
L962
L961
L960
C970
C971
C969
C974 C973
C9924
TL1902
R999
R1912
R1913
R1910
TL1903
Q1904
C991
Q930
R1911
R1909
C1901
Q1903
R1914
Q990
R1916R1917
Q940
C990
Q980
C9925
Q9902
C1928
Q1921
Q970
Q1920
R1965
C229
R1955
R1959
R1958
TL1911
R214
IC203
TL1910
R213
IC204
C230
L1902
R1957
C1908
R1956
IC4451
C1610
R1954
IC4452
C1903
C4455
C1611
C1609
R1604 C1612
IC1602
C1615
C1616
C1617
C1614
TL4433
TL209
TL210
R1603
C208
FB202 FB201
C209 C215 C217
TL205 C214
IC202
TL201TL202
FL703
C213
R769
TL1800
R1805
R1817
C1803
C1801
R1800
R1808
R1812
C1808
Q1800
R1810
Q1801
C1805
Q1802
R1804
R1807
R156
R1802
L151
R1819
R1811
D1802
R1814
R1809
R1816 C1806
C1809
D1801
R1815
C155
C1601
C210
R1662
C1603
C1602
C1604
R1602
C1607
C1605C1606
C1608
L1601
TL1904
R1962
R1961
IC1903
R1979
TL823TL912
C1919
R1966
R1964
R1963
R1960
TL1916
FB1902
C1902
C1912
L1905
C968
TL1907
L1901
R1932
D963
TL1906
D962
D960
D961
TL6712TL6710TL6727TL6718
SC6704
TL6715
TL6701
TL6711
TL6713
TL6709
TL6703
TL6707
FB702
TL6705
TL752
TL750
TL751
TL6717
R7402
TL7405TL7403
TL7401
TL7402
R2409
TL2408
TL2405
FB2405
TL2410
TL2406
TL2401
L2401
FB2401
TL2403
R2401
R2405
R2404
R2402
R3474
C2401
Z1
TL6728
TL2402
TL6733
TL6732
TL2404
SC2401
TL2409
TL3411
TL6730
TL2407
TL6729
TL6731
FB2406
Q7402
FB2410
R2407
R7403
FB2408
C7402
R7401
FB7401
Q7403
C7413
Q7401
R7415
R7416
R7413
D7401
R7433
C1730
D7402
R7431 R7436
TL7404
R7417
C7417
R7421
R7434
R7424
R7450R7427C7424
C7426 C7425
R7426
C7423
R7423
X7401
C7427
R7422
C7421
R7425
FB7402
TL753
C768
C7403
R765
Q750
L7701
R763
R764
R762
R760
C7419
FB701
C7701
C7718
R761
C7719
R7713
R7714
TL6708
TL6706
TL6704
TL6702
IC7702
R7711 R7712
TL6725
TL6726
TL6716
C7717
R7707
TL6714
R7709
R7708
C7711
L7702
R7701C7708
TL6724
C7706
C7704
IC7701
C7714 C7716 C7715C7407R7406
C752
R7441
IC7401
IC7402
R7444 R7447 R7446 C7405 R7445
R7418 C7416
C1718
C1715
C1717
R7448
TL1705
R7419
C1713
R1710
C1711
C1723
C1721
R7420
C1724
TL1704
TL1703
C1725
C1729
C7414
C1727
IC1702
R1713
R1714
C1728
R1712 R1711 C1726
TL1702
R1701
C1722
C1720
C1719
C1716
R1709
R1708
C1714
C1712
TL3334
TL3335
TL3336
TL3337
TL3343TL3310TL3345
SC3301
TL3314
TL3324
TL3303
TL3307
TL3308
TL3309
R3495R3466R3467
R3496
R3460
Q3405
IC3405
R3494
R3475 C3462 C3443
R3497
R3442
C3442
R3458
C3441
R3441
C3414
Q3401
Q3406
Q3407
C3409
R3489
R3465
C3405
C3440
R3498
R3459R3464
TL3367
TL3323
TL3320
TL3366
TL3319
TL3315
C3465 R3406 C3410 R3407 C3408
C3413
TL3365
R3404
C1710
R3402
TL3321
C3403
TL3356
TL3360
C1706
C3412
R3401
C3402
TL3357
TL3358
R1706R1702
TL1701
C3401
TL3346
TL3344
R1707R1705
R1720
L3401
R1722
Q1701
C1704
R1715
R1721
C3436
R1703
R1716
L3404
L1702
R1704 C1702
C701
C1703
C1732
L1701
C703
R1740
C761
IC704
C1707
R701
C1709
C1708
C762
C702 R712
R709
R717
D701
R7442
IC705
R743
Q701
TL715
R747
R718
R7443
TL3348
R705
R714
R713
R716
C718
C705
R7472
R715
R704
R711 C704
C712
C708
TL716
C755
IC703
R710
R702
R703
R750 R753
C7713
C753
C756 R754 C760 C764
R756
C759 C710 R755 R752 R708
TL701
R721
R706
TL711
C7712
C706
R707 C714
C722 C709 C725
FL701
R7702
C7720
C7707 C7710
C7709
R7705
IC7703
C7702
C7705
C7722
C731
C739
C732
C717 R744 R734
IC701
C724
C728
C726
C729
C721
C730
R719
TL714
C734
C715
R729
R722
R723
R720
TL703
TL911
C733
R725
C737
X702
C736
C735
L971
R727
R724
R749
R726
L702
TL3322
L1906
L701
C1916
L902
C963
C966
R1922
C3474
L3402
IC3402
TL3404
C3425
C3432
R3488
R3480
TH3401
C3479
R3446
R3445
R3472R3473
C3407
C3416
R3417
R3416
C3476
FL3403
R3426
C3418 R3421
R3419
C3478
C3415
R3418
C3477
C3424
C3426
C3433
C3438 R3428
R3409
R3415
R3413 R3414 R3434
IC3401
FL3401
TL3403
C3411
C3420
R3410
C3466
R3411
C3417
C3419
C3422
R3420
R3423
C3421 C3423
TL3401
FL3402
R3412
R3437C3431 C3480C3481
R3477
R3443
Q3403
CP3
CP1
TL903
TL904
TL905
R3491
R900
R901
C3429
R3449
R3490
TL902
TL901
TL900
TL916
R3436
R3435
C3430
R3481
TL3410
C3471
SC900
R3425
C3439
R3427
R3482 C3444 C3434
C3428
R3424
TL914
R3429
R3432
L910
R3486
L911
C961
L920
C3473
C986
C965
Q900
L901
L900
C964
R982
C945
R981
R984
C946
R983
R978
R977
C944
R979
C985
L922
R980
C943
R216
R976
D703
R975
C988
C942
C941
Q703
IC901
C940
C742
R971
R972
C939
R739
C741
R970
R728
R969
C932
R959 R960 R962 R966
R738
R958
R954
R9993
C931
R957
C933
R961
C934
R963
R964
R955
R733 C930
R9991C9919C9920
C740 R956 R953 R730
C9921
D971
R737
C9916
Q702
C9914
C745
R732 R742
IC902
R9983
C9913
R9982
R9986
R740
R9980
C9912
R9994
R9978
TL710
R741
R9969
C9909
R9966
R9967
R731
R9924R9992
TL1917
R735
TL913
C9908R9963
C9902
R9961
R5801
C738
R9965R9956
R9962
C9907
TL830
C9901
C9903
C9905
C9923
R9995
TL812
R5810
TL811
R5822
R9957
TL815
TL829
R5809
TL813
TL814
TL810
SC800
TL809
TL819
TL802
TL800
TL832
TL817
TL801
R5802
TL818
TL804
TL805
R5813
R5803
TL831
R5812
R5811
R5800
R5804
R5805
TL816
TL803
R5806
TL806
R5807
TL807
TL808
Q151
C168
R157
R5808
TL828
R5821
TL827
R5820
TL826
C167
R5819
TL825
R5818
TL824
R5817
R154
TL822
TL821
TL820
TL152
C163
R9953
C9904
C9906
C9900
R9952R9951
R9964
R9960
IC151
R9959
R9954
R9968
R9970
R9975
R9973
TL1018
R152
C164
C9915
R9981
R153
TL1019
TL1020
C9917
R9988
R9987
R155
TL1021
R9977
TL1022
R9990
C9922
R9979
R967
R965
R9985
TL1024
C936
R968
TL1023
R9984
R990
C935
C937
R991
C938
TL1007
C951
TL1006
TL1005
C952
TL1004
C953
TL1003
R994
TL1001
TL1002
R993
R995
TL1009
R998
TL1008
R996
C747
TL1010
TL1011
C950 C954C955 C949
C948
TL1012
R988
R985
R986
C947
R997
TL1015
R989
TL1013
R987
TL1014
TL1016
C746
TL1030
L970
TL1027
TL1017
C987
C984
L980
L921
C993
L940
L991
TL915
C989
CP2
L990
L930
C992
T900
C967
Q960
C982
L981
Q920
TL1039
TL1040
TL1041
C981
TL1045
TL1043
TL1042
TL1044
TL1046
TL1047
C151
TL1048
TL1049
TL1038
TL1036
IC152
TL1037
TL1034
C152
TL1035
TL1032
C166
SC1001
TL1033
TL1029
TL1031TL1054
TL907
TL1053
TL1052
TL1051
TL1050
C165
TL1026
R151
TL1028
TL1025
C154
C153
C156C157
C158
C159
C160
C162 C161
TL151
P151
TL2409
PCO D/A-Y
TL2407
PCO D/A-C
TL2800
DAC full-scale
TL1801
COM-amplitude
TL2801
DAC full-scale
TL2802
DAC full-scale
TL807
VCO free-run