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5 Troubleshooting
5-4
PN19MT/MO/IO
x178/19P2
5-1-5 H_Lin. Failure
IC201 Pin 21 voltage varies with
different H_Lin. DAC values?
IC403 Pin 7, 8 voltage varies with
different H_Lin. DAC values?
Check+12V line.
Check some parts around IC403.
Check L403.
Yes
Yes
No
Replace IC201.
No
5-1-6 Invariable H_Size
IC201 Pin 20 voltage varies with
different B_Out DAC values?
IC402 Pin6 Voltage Varies with
different H_Lin. DAC Values?
Check and replace IC402.
Yes
No
Check and replace IC201.
No
7-1-4 S Correction Failure
S1~S3 signals are right at each
frequency block?
Check S1 ~ S3 signal.
Check and replace C411~C418,
Q408~Q411, Q403~Q407.
Yes
Check and replace IC201.
No
7
WAVEFORMS
7
13.6 V (IC402, #6)
CH1 P-P = 13.6V
CH1 RMS = 9.02V
Summary of Contents for PN19MT
Page 7: ...2 Product Specifications 2 4 PN19MT MO IO x178 19P2 Memo ...
Page 17: ...Memo 4 Alignment and Adjustments 4 8 PN19MT MO IO x178 19P2 ...
Page 36: ...PN19MT MO IO x178 19P2 6 1 6 Exploded View and Parts List 6 1 PN19MT ...
Page 37: ...6 2 PN19MO 19P2 6 Exploded View Parts List 6 2 PN19MT MO IO x178 19P2 ...
Page 38: ...6 Exploded View Parts List PN19MT MO IO x178 19P2 6 3 6 3 PN19IO ...
Page 39: ...6 4 x178 6 Exploded View Parts List 6 4 PN19MT MO IO x178 19P2 ...
Page 40: ...6 Exploded View and Parts List 6 1 1 Front Cover CRT Ass y PN19MT PN19MT MO IO x178 19P2 6 5 ...
Page 41: ...6 1 2 Chassis Stand Ass y PN19MT 6 Exploded View Parts List 6 6 PN19MT MO IO x178 19P2 ...
Page 42: ...6 2 1 Front Cover CRT Ass y PN19MO 19P2 6 Exploded View Parts List PN19MT MO IO x178 19P2 6 7 ...
Page 43: ...6 2 2 Chassis Stand Ass y PN19MO 19P2 6 Exploded View Parts List 6 8 PN19MT MO IO x178 19P2 ...
Page 44: ...6 3 1 Front Cover CRT Ass y PN19IO 6 Exploded View Parts List PN19MT MO IO x178 19P2 6 9 ...
Page 45: ...6 3 2 Chassis Stand Ass y PN19IO 6 Exploded View Parts List 6 10 PN19MT MO IO x178 19P2 ...
Page 46: ...6 4 1 Front Cover CRT Ass y x178 6 Exploded View Parts List PN19MT MO IO x178 19P2 6 11 ...
Page 47: ...6 4 2 Chassis Stand Ass y x178 6 Exploded View Parts List 6 12 PN19MT MO IO x178 19P2 ...
Page 107: ...7 Electrical Parts List 7 60 PN19MT MO IO x178 19P2 Memo ...
Page 108: ...8 Block Diagrams PN19MT MO IO x178 19P2 8 1 ...
Page 109: ...Memo 8 Block Diagrams 8 2 PN19MT MO IO x178 19P2 ...
Page 110: ...9 PCB Diagrams 9 1 Component Diagram Main PN19MT MO IO x178 19P2 9 1 ...
Page 111: ...9 2 Pattern Diagram Main 9 PCB Diagrams 9 2 PN19MT MO IO x178 19P2 ...
Page 112: ...9 3 Component Diagram Video 9 PCB Diagrams PN19MT MO IO x178 19P2 9 3 ...
Page 113: ...9 PCB Diagrams 9 4 PN19MT MO IO x178 19P2 9 4 Pattern Diagram Video ...
Page 115: ...Memo 10 Wiring Diagrams 10 2 PN19MT MO IO x178 19P2 ...
Page 127: ...11 Schematic Diagrams 11 12 PN19MT MO IO x178 19P2 Memo ...