Service manual

21HS-50H

TROUBLESHOOTING TABLES.

Check F701. Blown out.

Abnormal Normal Replace the fuse.

Check R701 Q701. Check T701 pin16 voltage. The fuse is again blown out.

and IC701 (Approx. 290V at 220V AC)

Check IC701,D701,D702,

Normal D703,D704 and C705.

Check Secondary Main+B.

Abnormal (Approx. 110V) Normal

YES

Check D758,IC702,IC753 Check CRT connector K1- D1001 (Power LED Bright Red)

and D762. K5 bias. turns on.

Normal Normal Abnormal

D1001 (Power LED Dark Red)

Check R615. Check Check turns on

C878. IC801.

Checking the

D1001 turns on protector circuit.

brightly and darkly.

(Bus error)

NVM

(IC1002)

See many often D1001 TV PROCESSOR

flashes in red. (IC801)

This indicates which IC to

check up. SOUND PROCESSOR

(IC3001)

TUNER

(TU201)

NO RASTER