1 RL_ON
2 PWM_DIM2
3 GND
4 12V
5 12V
6 12V
7 12V
8 12V
9 GND
10 GND
11 INV_CTL 12 PWM_DIM1
Checking order when there is no audio
1.Check the contact condition of or 12V connector of Main Board
2. Measure the 12V input voltage supplied from Power Board
(If there is no input voltage, remove and check the connector)
3.Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound when you touch the
GND and output terminal, the speaker is normal.
Standard Repair Process Detail Technical Manual
Voltage and speaker checking method
when there is no audio
C. Audio error_No audio/Normal video
A21
Established
date
Revised
date
A21
①
②
③
1
SPK_R-
2
SPK_R+
3
SPK_L-
4
SPK_L+
<All Models>
②
Error symptom
Content
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Summary of Contents for 55UF6790
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