Sharp LC-52XS1E, Service Manual

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LC-52XS1E/RU/LC-65XS1E/RU
4 – 4
[3] Backlight POWER Check (details)
1. SUB-POWER-UNIT (1/2/3) (Backlight POWER) power supply input
• • •
AC1, AC2, AC3terminal
• • •
He is 220VAC.
2. SUB-POWER-UNIT (Backlight POWER) Power supply output
• • •
LA1/2/3terminal, PS1/2/3 terminal is as follows.
SUB-POWER-UNIT (1/2/3)
3. The input-and-output power supply of POWER-DISTRIBUTION-UNIT
• • •
The voltage of LA1/2/3, CN4, CN1-CN8 terminal is as follows.
POWER-DISTRIBUTION-UNIT
BACK LIGHT POWER FAILURE
1pin 2pin 3pin 4pin 5pin 6pin 7pin 8pin 9pin 10pin
LA1/LA2 27V 27V G G 20V 20V G G G — 52/65
LA3 27V 27V 27V G G G 20V 20V G G 65
1pin 2pin 3pin 4pin 5pin 6pin 7pin 8pin 9pin 10pin 11pin
PS1 BU5V BU5V LED_ON OVP G 27V 20V G 27V 20V G 52/65
PS2 BU5V LED_ON OVP 27V 20V G — — — — — 52/65
PS3 BU5V LED_ON OVP 27V 20V G — — — — — 65
1pin 2pin 3pin 4pin 5pin 6pin 7pin 8pin
LA1/LA2 CN1/2 27V 27V G G 20V 20V G G 52/65
LA3 CN3 27V 27V 27V G G G 20V 20V 65
1pin 2pin 3pin 4pin 5pin 6pin 7pin 8pin 9pin 10pin 11pin 12pin 13pin 14pin
CN4 20V_
R
20V_
R
20V_
R
20V_
R
20V_
R
G G 27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
27V_G
B
52/65
15pin 16pin 17pin 18pin 19pin 20pin 21pin 22pin 23pin
G G G G G G G G G 52/65
1pin 2pin 3pin 4pin 5pin 6pin
CN1 20V_R G G G 27V_G 27V_B POWER-DISTRIBUTION-UNIT1 52/65
CN2 20V_R G G G 27V_G 27V_B POWER-DISTRIBUTION-UNIT1 52/65
CN3 20V_R G G G 27V_G 27V_B POWER-DISTRIBUTION-UNIT1 52/65
CN5 20V_R G G G 27V_G 27V_B 52/65
• • •
20V_R G G G 27V_G 27V_B
• • •
CN7 20V_R G G G 27V_G 27V_B 52/65
CN8 20V_R G G G 27V_G 27V_B 65