15JF-26H (serv.man13). Trouble shooting tables - Sharp TV Service Manual (repair manual)

Model
15JF-26H (serv.man13)
Pages
3 Few pages! See other manuals at the bottom of the first or last page.
Size
89.95 KB
Type
PDF
Document
Service Manual
Brand
Device
TV / CTR / Trouble shooting tables
File
15jf-26h-sm13.pdf
Date

View Sharp 15JF-26H (serv.man13) Service Manual online

15JF-26H
34
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NVM
(IC1002)
TV PROCESSOR
(IC801)
TUNER
(TU201)
 TROUBLESHOOTING TABLES
Power LED Flashes
35
15JF-26H
NEITHER VERTICAL NOR
HORIZONTAL SYNCHRONIZATION
CIRCUIT TO BE CHECKED:
Sync. Separator Circuit.
Check pin33 and 34
of IC801.
DEFECTIVE VERTICEL AMP.
AND VERTICAL LINEARITY
Readjusted vertical size.
(Bass Data)
Vertical linearity and size
is abnormal.
Check R502,R505
NO VERTICAL SCAN
Check IC501 bias.
Normal
Abnormal
Check C502 and C514.
Check IC501.
NO SPECIFIC COLOUR
         NO
YES
Is some colour produced in
B/W broadcast reception?
Check IC801,R801,R802,
     
 YES
Is the white balance
R803,D804,D805,D806
properly adjusted?
and Q801.
           NO
Readjusted the white
balance.
The picture colour is cyan.
The picture colour is magenta.
The picture colour is yellow.
Check Q870,Q885 and
Check Q871,Q883 and
Check Q872,Q887 and 
their adjacent circuits.
their adjacent circuits.
their adjacent circuits.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.
15JF-26H
36
NO PICTURE, NO SOUND
CIRCUITS TO BE CHECKED:
Tuner.
PIF.
Does the noise level increase at max.
Automatic Gain Control.
Contrast,Brightness and Sound controls?
5V, 32V Power Source.
Noise increase but no
No snow noise.
signal is received.
Check the tuner supply voltage
Does noise or signal appear
LB and HB must be approx. 5V,  
at pin40 of IC801?
BT must be approx. 32V,and 
NO
         YES
CH preset data check.
Does noise or
Check IC801
signal appear at
and its related
Normal
pin38 of IC801?
circuit.
NO
  YES
Check the tuner
Does noise or
AGC at TP201.
signal appear at
Check Q401 
pin23 and 24
Q402 and related 
Normal
Abnormal
of IC801?
circuit.
NO
  YES
Check pin38
Check pin27
Check pin1,2 of
of IC801.
of IC801,Tuner
SF201,Tuner
Check pin37 of
and related circuit.
and related 
IC801 and
circuit.
related circuit.
NO SOUND
CIRCUITS TO BE CHECKED:
             NO
Audio Output Circuit.
Does signal appear
Check IC801 and
at pin6 of IC303?
 its related circuit.
            YES
       NO
Check Speaker.
Check IC303 and
peripheral circuit.

Download Sharp 15JF-26H (serv.man13) Service Manual (Repair Manual)

Here you can view online and download Sharp 15JF-26H (serv.man13) Service Manual in PDF. 15JF-26H (serv.man13) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp 15JF-26H (serv.man13) CTR. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.