Mitsubishi Electric PD-5010, Service Manual

Page: 23 / 75

12
(3) Picture errors
Display a picture in error mode. However, the video signal
level shall be maintained above 0.7Vp-p.
YES
NO
Are pulses of 3Vp-p available at Pins 38, 39, and
40 of the AD connector?
YES
NO
Are the horizontal/vertical sync signals of 3Vp-p
available at Pins 27/28 of IC8701, and a clock
signal at Pin 31?
YES
YES
Is a picture error caused by PC input? Are the specified voltages available at the
connectors below?
NO (Power source check)
Connector name Pin No. Voltage
PN 1 3.3Vdc
1 7Vdc
PM 7 5Vdc
9 14Vdc
YES NO
The MAIN PWB The POWER unit
is out of order. is out of order.
YES
(3)-1 (P13)
14
15
16
17
19
98
96
95
3
5Vp-p
5Vp-p
3Vp-p
5Vdc
10MHz, 3Vp-p
27~37NHz* 3Vp-p
15~45KHz * 3Vp-p
50~60Hz * 3Vp-p
5Vdc
H
V
* Changed according to the input signal.
0.7Vp-p or above
50KHz 60Hz 40MHz
Are the signals below available at Pins 14 to 17,
19, 98, 96, and 95 of the AM connector and at
Pin 3 (IP8001) in the DSP PWB?
NO