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M32 107E4 GS_3
50
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38. Rotation
3. ABL-CON
23. Keypad
24. Selftest
25,26. DDC bus
31,32. IIC bus
30, VCLK
EEPROM
4. H-linearity
Repair Flow Chart (Continued)
check
output from 0V to 5V
check
output from 0V to 5V
check key
Enter,Up,Down,Left,Right keys
check pin24
1.no H/V sync & IF cable pin5 floating
2.H/V sync exist & IF cable pin5 to ground
3.H/V sync non-exist & IF cable pin5 to gnd
4.After 1871&1872 pressed on, then power on
(1106) with IFcable pin5
5.After 1871&1872 pressed on, then power on
(1106) without IFcable pin5
check idle status
sda=pin25=hi
scl=pin26=hi
check idle status
sda=pin32=hi
scl=pin31=hi
check 7803 pin 7
Low
: write enable
Hi
: write disable
check
output from 0V to 5V
check 3836, 2822
3871~3875
- show msg.
- normal
-power saving
-factory mode
-burn in mode
check
7804 has been reserved
7804
for hardware DDC
check
7803
M24C16
7501
TDA4841
7304
MTV018-27
7301
TDA4886A
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