SAMSUNG CZ21K22TSXXEH, CS-15N11MJQ, CS2185S, CS14F2X, CS14F30X(ks1a) Service Manual

Samsung Electronics

Troubleshooting

5-1

5. Troubleshooting

5-1 No Video (Raster On, No Sound)

Open the IF Pin of Tuner

Measure the

Voltage of Each Pin

of TU01S

Yes

Check IC201S

Pins 2,3

Yes

Check IC201S
Pins 40,49,50

No

No

No

Check/Replace

TU01S

Check/Replace

IC201S

See "No Sound"

(Video OK)

Check/Replace

IC501, IC201S

See "No Video"

(Sound OK)

See "No Sound"

(Video OK)

5-2 Samsung Electronics

5-2 No Power

Troubleshooting

Check the 125V,

13.0V B+ Lines

Yes

Check IC802

Pin 8 (8V)

Pin 9 (9V)

Pin 10 (5V)

Check IC201S

Pin 1 (3.3V)

Yes

Check IC201S

Pin 1 : Stand-by : 0V

Normal : 3.3V

No

No

No

No

Check/Replace

IC801S, D801S, D802S,

D803S,D804S,FP801S

Check/Replace

IC802 (KA7632)

Check/Replace

IC201S

Check/Replace

IC201S, (µ-com).

Check IC201S,

Pin 33 (H-out)

No

Check/Replace

IC201S, Q401, Q402.