22
Power Source Circuit
Check
POWER OFF
Is the voltage between 1-pin
and 2-pin of J1 approx.12V?
(2-pin is GND)
POWER ON
AC adaptor failure.
F1 failure.
Is TP202(VCC)
approx.5.1V?
Is TP200(VLCD)
approx.5V?
D8,D9,D10 failure.
Is TP203(VCPU)
approx.5.15V?
D7 failure.
LCD unit failure.
Disconnect the LCD unit
from CN100.
Is TP200(V
LCD
)
approx.5V?
Failure of IC1 or their
peripheral parts.
Failure of IC7 or their
peripheral parts.
Is TP204(+10V)
approx.10V?
Go to Another
Function Check.
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Yes
No
Yes
Is D2 cathode
approx.12V?
Is D7 anode
approx.5.5V?
Summary of Contents for QD-101MM
Page 39: ...38 6 CIRCUIT DIAGRAM PWB Fig 27 CIRCUIT DIAGRAM MAIN CIRCUIT No 1 ...
Page 40: ...39 Fig 27 CIRCUIT DIAGRAM MAIN CIRCUIT No 1 ...
Page 41: ...40 Fig 28 CIRCUIT DIAGRAM MAIN CIRCUIT No 2 ...
Page 42: ...41 Fig 28 CIRCUIT DIAGRAM MAIN CIRCUIT No 2 ...
Page 43: ...42 Fig 29 CIRCUIT DIAGRAM MAIN CIRCUIT No 3 ...
Page 44: ...43 Fig 29 CIRCUIT DIAGRAM MAIN CIRCUIT No 3 ...
Page 45: ...44 Fig 30 CIRCUIT DIAGRAM MAIN CIRCUIT No 4 ...
Page 46: ...45 Fig 30 CIRCUIT DIAGRAM MAIN CIRCUIT No 4 ...
Page 47: ...46 Fig 31 CIRCUIT DIAGRAM POWER CIRCUIT ...
Page 48: ...47 Fig 31 CIRCUIT DIAGRAM POWER CIRCUIT ...
Page 49: ...48 Fig 32 CIRCUIT DIAGRAM VIDEO CIRCUIT ...
Page 50: ...49 Fig 32 CIRCUIT DIAGRAM VIDEO CIRCUIT ...
Page 51: ...50 Fig 33 CIRCUIT DIAGRAM AUDIO CIRCUIT ...
Page 52: ...51 Fig 33 CIRCUIT DIAGRAM AUDIO CIRCUIT ...
Page 53: ...52 Fig 34 PWB PATTERN MAIN PWB FRONT SIDE ...
Page 54: ...53 Fig 34 PWB PATTERN MAIN PWB REAR SIDE ...
Page 66: ...PRINTED IN GERMANY ...
