Troubleshooting
5-1
5. Troubleshooting
5-1 No Power
Check
LED lamp
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Abnormal
Plug in Power Cord
Check
MICOM IIC #5, #6
Check
IC901 MICOM
Input Voltage
Check
the MICOM Power #59
With Remote Controller
Check
Level Shifter Q909, Q910
Output(If 2N7000 Output has the DC
Component over 0.7V, it is broken)
Check
MICOM
IIC #2, #3
Check
IC902 EEPROM
Replace
Q909, Q910
Check
Q908
Replace
the MICOM
Check IC201S
Replace
EEPROM(IC902)
Replace Q908
Abnormal
Abnormal
Abnormal
Abnormal
Normal
Normal
Normal
Abnormal
Check and Replace
IC903
Replace
D801 or D811
Check and Replace
IC804
Check and Replace
R828 or D805
Check
IC201S VDP
H-OUT #50
Check
Q401 H-TR
Check
135V Line
Check
IC802, IC803
Replace
IC802, IC803
Replace
IC201S
Replace
Q401
Abnormal
Check
PC801S, IC801S
Replace
FBT
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
Normal
ON
Check and Replace
the MICOM
Check
IC903 3.3V Regulator
Input Voltage
Check
D801 and D811
Check
IC804 Input Voltage
Check
R828 and D805
Check
IC801S and FP801S
OFF
Normal
Normal
Note : When you check whether any component is normal, you must let the output pin be open in order not to be affected by the s
ide of output.
Summary of Contents for 29VH14P
Page 1: ...SERVICE MANUAL FILE NO 050 200127 29VH14P PRINTED IN U K COLOUR TELEVISION ...
Page 11: ...3 2 MEMO ...
Page 29: ...4 18 MEMO ...
Page 33: ...MEMO 5 4 ...
Page 55: ...1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN TOSHIBA CORPORATION ...
Page 56: ...SERVICE MANUAL FILE NO 050 200127 29VH14P PRINTED IN U K COLOUR TELEVISION ...
Page 57: ...8 Block Diagrams Schematic Diagrams 8 1 8 1 Power Diagram ...
Page 58: ...8 2 Block Diagram Schematic Diagrams 8 2 ...
Page 60: ...9 2 MEMO ...
Page 65: ...Schematic Diagrams 10 5 TP35 TP34 TP33 10 5 CRT TP33 TP34 TP35 ...
Page 66: ...Schematic Diagrams 10 6 10 6 PIP MODULE ...
Page 67: ...Schematic Diagrams 10 7 10 7 SCAN MODULE ...
Page 68: ...Schematic Diagrams 10 8 10 8 SIDE A V ...
Page 69: ...Schematic Diagrams 10 9 10 9 VIDEO S W MODULE DOUBLE FOCUS DOUBLE FOCUS VIDEO S W MODULE ...
Page 70: ...1 1 SHIBAURA 1 CHOME MINATO KU TOKYO 105 8001 JAPAN TOSHIBA CORPORATION ...