54
NO
YES
Does raster
appear with G and K of
QP01 shorted ?
NO
YES
Is base voltage of
Q751 normal ?
NO
YES
Are voltages
of both ends of T751
(primary side)
normal ?
Check QP01
(Deflection PWB)
(Power supply PWB)
D
NO
YES
Does raster
appear with G and K of
Q905 shorted?
E
Check
I702 pin(15)-H out,
pin(8)-DEF HVcc
QP04, DP35, DP36
Check T751,
R754, R755
Check Q777,
QH01, T751, T752
Check Q905, I903, D921,
D908, I902, Q902, D923
Check Q905
Summary of Contents for 50NP4
Page 55: ...55 ...
Page 56: ...56 ...
Page 57: ...57 ...
Page 64: ...PRINTED CIRCUIT BOARD 61 2H Video Terminal P W B ...
Page 65: ...PRINTED CIRCUIT BOARD DEFLECTION P W B 62 ...
Page 66: ...PRINTED CIRCUIT BOARD SIGNAL P W B 63 ...
Page 67: ...PRINTED CIRCUIT BOARD VM SENSOR 2 64 ...
Page 68: ...PRINTED CIRCUIT BOARD POWER SUPPLY P W B 65 ...
Page 69: ...PRINTED CIRCUIT BOARD SRS P W B 66 ...
Page 70: ...67 WIRING DRESS DRAWING ...
Page 71: ...68 50NP4 WIRING DRAWING ...
Page 72: ...69 60NP4 WIRING DRAWING ...
Page 73: ...70 50NP4 WIRING DRAWING ...
Page 74: ...71 60NP4 WIRING DRAWING ...
Page 75: ...72 BLOCK DIAGRAM ...
Page 76: ...73 WIRING DRAWING ...
Page 90: ...88 ...