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4. Troubleshooting
4-1-2. TV POWER ON SEQUENCE
CN9003 (Back Light)
1
GND
3
GND
5
BLU On/Off
7
SDA_LED
9
TEST_LD
11
SERIAL_STT
13
SERIAL_DATA
15
GND
1.
Power TV On
POWER ON
.2Vdc (when off) changes to 3.3Vdc (on)
9
NOTE
•
Will stay On for short time when powered off.
2.
If voltage error or no change:
Jog Function & IR Control Test
9
3.
If OK remove One Connect Cable to Main Board.
TV Power's on.
9
4.
If TV Power's On
One Connect Box & Cable for errors
9
5.
If TV still won't power on
All
A13V
supplies for approx. 12.7VDC
9
All
Vamp
supplies for approx. 18 VDC
9
6.
If any wrong voltages, remove SMPS connector to Main Board.
A13V
again for approx 12.7VDC
9
All
Vamp
supplies for approx. 18 VDC
9
5. If OK replace TV Main Board.
6. If still wrong voltage replace SMPS.
4-2
CN9003
<LD Board>
2
Seamless
4
SCL_LED
6
TEST_SD
8
GND
10
VSYNC_IN
12
SERIAL_UHR
11
14
GND
13
16
CONTACT
15
17
CN803
CN803 (Power)
1
FAIL COUNT
2
3
A13V
4
5
A13V
6
7
A13V
8
9
A13V
10
GND
12
VAMP
14
VAMP
16
VAMP
18
CN903
FUSE
<SMPS Board>
1
NC
3
NC
5
NC
7
Power ON/OFF
9
GND
11
GND
13
GND
GND
GND
CN903
GND
2
GND
Vdrv
4
Vdrv
Vdrv
6
Vdrv
Vdrv
8
Vdrv
GND
10
GND
B13V
12
Fault
GND
14
GND
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