Oki OKIFAX4550, Руководство по обслуживанию

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41309401TH Rev.4
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Input waveform of pin 12
of IC6 is similar to Figure
H.3(2/2) or waveform peak
between 1.6 V and 3.2 V
Input waveform of pin 3
of IC13 is similar to Figure
H.3(1/2) or waveform peak
between 0.5 V and 2 V
5V input to pin 2 of TR505
when the sensor is lit
IC6 SDT 2-7 are 0K
(digital converted value)
Yes
Yes
Yes
No
No
No
No
Replace IC6.
Replace IC16.
Replace IC16
or RAM1.
Replace IC13. Check CN5. Replace IC16.
Replace TR1. Replace TR505.
No
No
Yes
Yes
Yes
Yes
No
Yes
3: Read image data NG
Sensor clock waveform
is similar to Figure H.3(1/2)
(Check with pin 8 of CN5.)
Voltage of pin 3 of TR1
comes down approximately
0.7 V than pin 1 when the
sensor is lit
Sensor LED is lit
4.1.3 Read image data NG