2.2 Fan Control Adjustment
1. Set the lamp mode to "Normal" and then enter the service mode.
2. Select group no. “
111
”, item no. “
5
” and set data value to “
1
”.
3. Connect a digital voltmeter to test point “
TP12V1
” (+) and chassis ground (–). Select
item no. “
89
” and change data value to adjust voltage to be
6.5
± 0.1V.
4. Connect a digital voltmeter to test point “
TP12V2
” (+) and chassis ground (–). Select
item no. “
91
” and change data value to adjust voltage to be
6.5
± 0.1V.
5. Connect a digital voltmeter to test point “
TP12V1
” (+) and chassis ground (–). Select
item no. “
90
” and change data value to adjust voltage to be
13.5
± 0.1V.
6. Connect a digital voltmeter to test point “
TP12V2
” (+) and chassis ground (–). Select
item no. “
92
” and change data value to adjust voltage to be
13.5
± 0.1V.
7. Select item no. “
5
” and set data value to “
0
”.
2.3 Clamp Adjustment [PC]
1. Receive the 16-step grey scale computer signal with
Computer2 [RGB]
mode.
2. Enter the service mode.
3. Connect an oscilloscope to test point “
TPG1
” (+) and chassis ground (–).
4. Select group no. “
0
”, item no. “
0
” and change data value to adjust the pedestal level
and black level to be the same level.
5. Connect an oscilloscope to test point “
TPR1
” (+) and chassis ground (–).
6. Select item no. “
1
” and change data value to adjust the pedestal level and black level
to be the same level.
7. Connect an oscilloscope to test point “
TPB1
” (+) and chassis ground (–).
8. Select item no. “
2
” and change data value to adjust the pedestal level and black level
to be the same level.
Fig. 3-3
P
edestal Lebel
Blac
k Lebel
Part 3: Adjustment
3-12
Summary of Contents for LV-7215U
Page 9: ...Part 1 General Information ...
Page 25: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 66: ...Part 4 Troubleshooting ...
Page 78: ...Part 4 Troubleshooting 4 12 AN5870 RGB SYNC SW IC1201 IC5201 BA7078 Sync Separator IC5341 ...
Page 80: ...Part 4 Troubleshooting 4 14 CXD3536 LCD Driver IC401 FA5502 P F Control IC621 ...
Page 81: ...Part 4 Troubleshooting 4 15 M62392 M62393 D A IC6271 IC281 ML60851 USB Driver IC9801 ...
Page 83: ...Part 4 Troubleshooting 4 17 TC90A69F Y C Separator IC2101 ...
Page 84: ...Part 5 Parts Catalog ...
Page 85: ......
Page 99: ...Part 6 Electrical Diagrams ...