Eiki LC-XT4E, Service Manual

Page: 81 / 160

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Electrical Adjustments
Equipment Oscilloscope
Input mode
Computer mode
Input signal 16-step gray scale signal
1. Enter the service mode.
2. Change data values for the test points to adjust the
waveform “ a ” to be minimum amplitude.
Group No. Connection
200 - 9 TP531 (G)
200 - 10 TP501 (R)
200 - 11 TP561 (B)
(a)
White Level
,
Gain adjustment [PC]
Equipment Digital voltmeter
Input mode Computer mode
Input signal 16-step gray scale computer signal
1. Enter the service mode.
2. Change data values for each test points to adjust the
video signal reference voltage.
Group No. Connection Adjustment value
200 - 0 TP531 (G)
7.5
±0.1Vdc
200 - 1 TP501 (R)
7.5
±0.1Vdc
200 - 2 TP561 (B)
7.5
±0.1Vdc
n
Video signal center adjustment
Equipment Oscilloscope
Input mode
Computer mode
Input signal 16-step gray scale computer signal
1. Enter the service mode.
2. Change data values for each test points to adjust the
PSIG signal amplitude.
Group No. Connection Adjustment value
200 - 3 TP533 (G) A =
10.6
±0.1V
200 - 4 TP533 (G) B =
5.0
±0.1V
200 - 5 TP503 (R) A =
10.6
±0.1V
200 - 6 TP503 (R) B =
5.0
±0.1V
200 - 7 TP563 (B) A =
10.6
±0.1V
200 - 8 TP563 (B) B =
5.0
±0.1V
B A
m
PSIG adjustment
Equipment Digital voltmeter
1. Enter the service mode.
2. Change data values of each test points to adjust the
fan driving voltage.
Group No. Fan Connection Adjustment value
140 - 0 Fan-A TP7611
16.0
±0.1Vdc
140 - 1 Fan-A TP7611
24.0
±0.1Vdc
(Sub Power)
140 - 2 Fan-C TP2661
7.5
±0.1Vdc
140 - 3 Fan-C TP2661
13.8
±0.1Vdc
(PBS FANNET)
140 - 4 Fan-B TP2671
8.0
±0.1Vdc
140 - 5 Fan-B TP2671
13.2
±0.1Vdc
(EXH FANNET)
140 - 6 Fan-D1 TPFN1
9.0
±0.1Vdc
140 - 7 Fan-D1 TPFN1
13.5
±0.1Vdc
140 - 8 Fan-D2 TPFN2
8.0
±0.1Vdc
140 - 9 Fan-D2 TPFN2
13.0
±0.1Vdc
140 - 10 Fan-D3 TPFN3
9.0
±0.1Vdc
140 - 11 Fan-D3 TPFN3
13.5
±0.1Vdc
140 - 12 Fan-D4 TPFN4
8.0
±0.1Vdc
140 - 13 Fan-D4 TPFN4
13.0
±0.1Vdc
(MAIN)
Note:
The location of each fan is refer to the parts list.
b
Fan driving voltage adjustment