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31
VL-PD3AS/AH/AE
(Wiring board diagram: Main2 Side B)
9. VF VCO adjustment
Test point
TL8821
Address
VCR ADJ 32
Mode
VCR AV input
Procedure
1) Use 3-STEP staircase wave as an input signal.
2) Connect TL8821 to a digital voltmeter and adjust the DC voltage with the address 32 to the adjustment
standard value.
Adjustment
1.85
±
0.1V
rating
Examples
• During IC702 or IC8800 replacement.
10. VF COM-DC adjustment
Test point
TL8840(VCOM)
Address
89
Mode
VCR AV input
Procedure
1) Use 3-STEP staircase wave as an input signal.
2) Read the output of TL8841(VG) and the DC voltage with a digital voltmeter (VG
DC
).
3) Read the output of TL8840(VCOM) and the DC voltage with a digital voltmeter (VCOM
DC
).
4) Make the adjustment so that (VCOM
DC
- VG
DC
) is within the adjustment rating.
Adjustment
-0.15
±
0.1V
rating
Examples
• During IC702 or IC8800 replacement.
11. VF brightness adjustment
Test point
TL8841(VG)
Address
VCR ADJ 80
Mode
VCR AV input
Procedure
1) Use 3-STEP staircase wave as an input signal.
2) Change VCR ADJ:8C to 1F.
3) Adjust the waveform of TL8841(VG) between pedestals to the specified level.
4) Return VCR ADJ:8C to the former state.
Adjustment
7.4Vp-p
±
0.1Vp-p
rating
Examples
• During IC702 or IC8800 replacement.
Sig. center
7.4Vp-p 0.1Vp-p
GND
1905
R1911
Q1900
R1900
TL1900
TL1929
6
TL1909
R1930
R1931
R1901
Q1911
Q1908
R1903
R1902
TL1939
R1918
R1917
TL1938
TL1921
TL1935
R1933
TL1922
TL8854
Q1901
R1923
R1904
R1921
TL1933
R1924
Q1909
R1940
R1920
R1929
TL1934
R1915
Q1916
R1932
R1937
R1916
31
Q5230
TL8820
R1914
TL8871
TL1930
TL8821
Q1903
Q1914
TL1931
TL8819
R1919
R1927
R1928
TL5228
TL5227
TL1915
TL1937
TL1923
TL1936
C1920
Q1915
C4701
TL5226
TL5224
TL5225
TL8823
TL1906
L8805
TL1905
IC4701
C8833
TL5295
TL5217
C8831
C4702
TL8848
TL8850
TL8847
TL8849
TL8851
TL8852
TL8846
TL8845 TL8844
TL8840
TL8841
TL8842
TL8843
R1452
R1416
R1411
R1454
R1451
R1453
L1402
C1402
C1940
TL8804
TL3323
Q1912
Q1910
TL3319
TL3367
TL1901
TL1902
TL3409
TL3408
R1944
R1942
TL3339
R1945
TL3320
TL1704
C1722
TL3411
Q1917
C1723
TL5218
C1727
R1941
TL3333
TL1703
C1726
C1980
R1715
IC980
R1721
R980
C1725
R1716
C981
TL3313
TL3328
R1714
C1724
R1713
R982
TL1702
R1981
R983
TL3406
TL1926
TL1928
TL3331
TL3327
TL3329
TL3330
TL3410
TL1927
TL1924
TL3306
TL3368
TL3352
TL3403
TL3332
Q1918
TL3404
TL1925
TL3338
TL3305
TL3351
TL3401
TL3326
R1909
R1955
Q1906
R1910
C1906
C1728
R1707
C1708
R1709
R1708
C1714
C1712
C17
0
TL1701
C1720
C1718
C1717
R1711
R1710
C1710
TL3301
TL3302
IC1701
C1716
TL3341
TL3340
C1709
R1712
C1715
C1719
L1701
R1722
C1713
C1721
TL1705
R1954
C1711
L1404
C1407
C1415
Q1405
C1405
R1470
R1408
R1415
C1409
Q1401
R1471
C1404
R1410
C1403
L1403
C1
4
Q1404
R1407
R141
SC8801
TL8821
VF VCO
TL8840
VF COM-DC
TL8841
VF COM-DC
VF brightness
VF contrast
VF
µ
1
VF sub-contrast R/B
VF sub-brightness R/B
TL8842
VF sub-contrast R/B
VF sub-brightness R/B
TL8843
VF sub-contrast R/B
VF sub-brightness R/B
Содержание VL-PD3AE
Страница 3: ...3 VL PD3AS AH AE 2 PART NAMES For details on the use of each control ...
Страница 81: ...109 VL PD3AS AH AE MAIN1 PWB Wiring Side SIDE A A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Страница 83: ...111 VL PD3AS AH AE MAIN1 PWB Wiring Side SIDE B A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Страница 85: ...113 VL PD3AS AH AE MAIN2 PWB Wiring Side SIDE A A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Страница 87: ...115 VL PD3AS AH AE MAIN2 PWB Wiring Side SIDE B A B C D E F G H I J 1 2 3 4 5 6 7 8 9 10 ...
Страница 94: ...VL PD3AS AH AE 122 M E M O ...