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29
VL-PD3AS/AH/AE
4. BURST PHASE adjustment
Test point
TL1811
Address
E7
Mode
VCR AV input
Procedure
1) Input the monochrome signal (R) into AV input.
2) Connect TL808 to GND. (The 1H inversion stop)
3) Set the data of the address E6 to 30.
4) Minimize the signal level difference of TL1811 every 1H.
Adjustment
±
400mV
rating
Examples
• During E
2
PROM (IC801) replacement. • During LCD decoder IC (IC802) replacement.
3. H-position adjustment
Test point
TL1824
Address
84
Mode
VCR AV input
Procedure
1) Input the white 100% signal as an AV input.
2) Connect the oscilloscope to TL1824, and adjust the pulse width.
Adjustment
3.3
µ
sec
±
0.15
µ
sec
rating
Examples
• During E
2
PROM (IC801) replacement. • During LCD controller IC (IC1802) replacement.
2. VCO adjustment
Test point
TL1824
Address
89
Mode
VCR AV input
Procedure
1) Connect TL1826 to GND. (Free run mode)
2) Connect the Frequency counter to TL1824 and adjust it.
Adjustment
15.625kHz
±
100kHz
rating
Examples
• During E
2
PROM (IC801) replacement. • During LCD decoder IC (IC802) replacement.
1. Contrast adjustment
Test point
TL1810 (G-OUT)
Address
81
Mode
VCR AV input
Procedure
1) Set the data of the address 85 to 80.
2) Input white 100% as an AV input.
3) Connect TL808 to GND. (The 1H inversion stop)
4) Connect 220 K
Ω
between TL816 and GND.
5) Seeing the waveform of TL1810 (G-OUT), make an adjustment between the white peak and the sync tip.
Adjustment
3.0V
±
0.1V
rating
Examples
• During E
2
PROM (IC801) replacement. • During LCD decoder IC (IC802) replacement.
t
V
ADJUSTING THE LCD CIRCUIT
*
To make this adjustment, set the backlight switch to the "NORMAL" position.
V
(Wiring board diagram: LCD Side A)
1H
1H
In the same adjustment
R811
R808
R807
R806
R815
R801
R803
C808
R802
R821
R1808
C806
R825
R822
C817
C805
R1800
TH1800
R800
R824
C820
C823
C822
D801
C824
R829
C826
R832
TL816
C827
C835
R843
R835
R831
R841
R837
R855
R858
C848
R852
R853
C847
R859
R840
R860
R862
C845
C846
C836
C837
R870
Q800
C840
R849
D800
R871
L803
C839
C842
R848
Q801
C1813
Q1800
C1821
D1801 R1828
C1810
R1819
IC1801
R1836
R1841
C1830
R1847
R1850
R1840
C1816
R1838
R1848
C1820
IC800
R1843
C1822
R1845
C5811
TL5807
SC5800
R5812
TL5806
R5813
R5808
Q5801
L800
C804
R5803
R5807
R1853
Q1801
C1826
R1858
R1852
TL808
C1824
R1844
R1846
R1823
R1851
R1806
C1817
TL1801
R1849
C1819
R1826
R1827
R1842
R1837
IC1802
R1839
R1835
C1818
R1824
TL1826
R1856
R1809
C1808
L1801
R1816
C1804
R1821
C1807
C828
C1805
R1804
R1803
R1802
R1805
R845
R1810
C833
IC1800
R1813
L802
R1801
TL1800
R856
C832
C844
C831
C830
R838
R847
C841
R854
R857
R846
C843
R850
R851
R827
IC802
C825
C819
C821
C816
C815
C814
R816
C813
C812
C811
C810
C838
C818
R814
R813
C834
R844
R842
R805
C800
TL1822
TL1823
TL1813
TL1821
TL1820
TL1819
TL1818
TL1817
TL1816
TL1815
SC1800
TL1814
TL1812
X800
TL1811
TL1810
TL1809
TL1808
TL1807
TL1806
TL1805
TL1804
TL1803
TL1802
R1812
D1800
R1817
C1806
L801
L1802
C1809
C850
R1818
R1857
C1814
R1814
C1811
L1803
C1801
C1812
R1822
R1829
R1815
C1800
R861
R1830
L1800
R1832
C1803
C807
C809
C803
R1859
R1807
IC801
D1802
R5810
C5808
C5810
C5803
Q5803
Z1
C5809
T5800
L5800
L5801
C5804
Q5802
C5806
R5811
C5800
TL5804
TL5802
TL5800
TL5801
SC800
TL5805
TL5803
TL826
TL824
TL825
TL1825
TL1824
TL828
TL823
TL827
TL821
TL822
C1829
SC802
TL819
TL820
TL817
TL818
TL815
TL814
TL831
TL830
TL829
SC801
TL838
TL837
TL836
TL835
R1854
R1855
C1825
C1827
TL1810
Contrast
TL808
Contrast
BURST PHASE
TL816
Contrast
TL1824
VCO
H-position
COMMON PULSE
TL1826
VCO
TL1814
COMMON PULSE
TL1811
BURST PHASE
Summary of Contents for VL-PD3AE
Page 3: ...3 VL PD3AS AH AE 2 PART NAMES For details on the use of each control ...
Page 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 ...
Page 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 ...
Page 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 ...
Page 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 ...
Page 94: ...VL PD3AS AH AE 122 M E M O ...