• Service Manuals |
  • Sharp |
  • TV |
  • 21KF-80 (serv.man12)

21KF-80 (serv.man12). Troubleshooting tables - Sharp TV Service Manual (repair manual). Page 3

Read Sharp 21KF-80 (serv.man12) Service Manual online

38
21KF-80H
NO PICTURE, NO SOUND
Does the noise level increase at 
max.
Contrast, Brightness and Sound 
Noise increase but .
No signal is received.
No snow noise.
Check the tuner supply voltage
LB must be approx 5V.
BT must be approx. 32V, 
and CH preset data check.
Does noise or signal appear
at pin40 of IC801?
Does noise or
signal appear at
 pin38 of IC801?
Does noise or
signal appear at
 pin23 and 24
of IC801?
Check IC801and
its related 
circuit.
Check Q401,
Q402 and its
related 
circuit.
Check pin1,2
of SF201, Tuner
and related 
circuit.
Check pin37
of IC801and
related 
circuit.
Check pin38
of IC801.
Check pin27
of IC801, Tuner
and related 
circuit.
Check the Tuner
AGC at TP201.
NO SOUND
Does  signal appear
at pin6 of IC302 / 303?
Does  signal appear
at pin2 of IC302 / 303?
Check Speaker.
Check IC302 / 303
and peripheral 
circuit.
Check IC3001and
its related 
circuit.
Page of 3
Display

Download Sharp 21KF-80 (serv.man12) Service Manual (Repair Manual)

Found More:

21KF-80 (serv.man12) Service Manuals

Preview DownloadPagesSize
21KF-80 (serv.man2) Contents Service Manual 1 81.43 KB
21KF-80 (serv.man13) Service Manual 44 5 MB
21KF-80 (serv.man11) Block diagrams Service Manual 3 333.84 KB
21KF-80 (serv.man10) Schematic diagrams Service Manual 6 1.06 MB
21KF-80 (serv.man9) ICs additional information Service Manual 7 142.38 KB
21KF-80 (serv.man8) Printed wiring boards Service Manual 5 3.02 MB
21KF-80 (serv.man7) Chassis layout Service Manual 1 77.75 KB
21KF-80 (serv.man6) Hotel mode functions and LED flashing code Service Manual 2 59.53 KB
21KF-80 (serv.man5) Adjustment procedures Service Manual 6 160.87 KB
21KF-80 (serv.man4) Controls and terminals Service Manual 1 119.66 KB
21KF-80 (serv.man3) Important servicing notes Service Manual 1 57.25 KB
21KF-80 (serv.man15) User Guide / Operation Manual 32 1.01 MB
21KF-80 (serv.man17) NVM Data Firmware 439 B
21KF-80 (serv.man18) NVM Data Firmware 439 B
21KF-80 (serv.man14) Parts listing Parts Guide 6 445.96 KB
21KF-80 Service log sheet and electrical Specification 2 58.71 KB
21KF-80 (serv.man16) Picture goes black and white. (revision-4) Technical Bulletin 1 138.08 KB

Random: