PDP-507CMX
109
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Yes
Yes
Failure analysis for the
MAIN Assy
⇒
MA3
Yes
Yes
Yes
Failure in the IC8501
Failure in the IC8002
Failure in the MAIN Assy
Failure in the DD Assy, or PN1
cable broken
Disconnect the cable from the
CN9007 "PN1" connector. Check
if 3.3V DC is output from Pin 1 of
CN307 "PN".
No
No
No
Yes
Failure in the MAIN Assy
Failure in the DD Assy, or PN2
cable broken
Disconnect the cable from the
CN9012 "PN2" connector. Check
if 2.5-3.3 V DC is output from pin
7 of CN307 "PN".
No
No
No
In a case when no image from any input appears
Is the voltage at Pin 51 of IC8501
3.3 V DC?
Is the voltage at Pin 1 of CN9012
"PN2" connector 2.5-3.3 V DC?
Is the voltage at Pin 4 of IC8002
1.5 V DC?
Failure in the IC8003
No
Failure in the X8001
No
Failure in the X8002
No
Yes
Yes
Yes
Is the voltage at Pin 5 of IC8003
1.5 V DC?
Failure in the MAIN Assy
Is a CLK signal input to Pin 12 of
IC8501? And are sync signals
input to Pins 55 and 57?
Is a DE signal input to Pin 58?
Waveforms 33-1, 33-2
Is a CLK signal input to Pin 3 of
X8001?
Waveform 34
Is a CLK signal input to Pin 3 of
X8002?
Waveform 35
Summary of Contents for PDP 507CMX
Page 44: ...PDP 507CMX 44 1 2 3 4 1 2 3 4 C D F A B E 4 2 OVERALL CONNECTION DIAGRAM 2 2 ...
Page 45: ...PDP 507CMX 45 5 6 7 8 5 6 7 8 C D F A B E ...
Page 84: ...PDP 507CMX 84 1 2 3 4 1 2 3 4 C D F A B E 500ns div 500ns div 200ns div ...
Page 104: ...PDP 507CMX 104 1 2 3 4 1 2 3 4 C D F A B E ...
