SAMSUNG SP43J7PF Service Manual

Troubleshooting

Samsung Electronics 5-1

5. Troubleshooting

5-1 Convergence Misaligned

Normal

Check the

output voltage and waveform

of CN802, CN203 on

the Convergence Board

Abnormal

Check HZ01 out pin

(BV, BH, RV, RH, GV, GH)

Normal

Check the associated

circuitry

Abnormal

Check Convergence

Module

1. Check F802, F855,
F805, F806 on
the SUB Board

2. Check the output
from H-BLK, V-BLK,
D1, D2, D3 on
the Main Board

5-2 No Sound

Troubleshooting

5-2 Samsung Electronics

Check if CN601 is inserted

Normal

Check IC665

output pins 2,4

Abnormal

Check IC665 input pin 3

Normal

Check IC665

mute pin 5

Normal

Check IC665

output pins 7,11

Abnormal

Insert CN601

(Connector)

Normal

Check Speaker

Abnormal

Check F854 on
the SUB Board

Abnormal

Check the mute circuit

Normal

Abnormal

Check IC601

input pins 35, 38

Abnormal

Check H006

input pins 15,17

Abnormal

Check ICV01

Input pins 49,51

Abnormal

Check H003
out Pins 1,2

Check IC665

Normal

Check Tone Control

Normal

Check the 3D Phonic

circuit

Normal

Check ICV01