Epson FX 1170 Service Manual - Page 116
Table 5-4. Repairing the BOARD ASSEMBLY, C076, PSB/PSE, ZD51.
View all Epson FX 1170 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 116 highlights
Table 5-4. Repairing the BOARD ASSEMBLY, C076 PSB/PSE (Continued) Problem Cause Checkpoint The voltage of the +35 V line is below thespecifiedvalue. Q3, ICI, Pcl, PC2 Check the voltage waveforms at Q3. Solution Replace D3, Icl, Pcl, PC2 or ZD51. . , CH1=O.2V TlME=2~s Q2 is dead. Check the voltage waveforms at Q2. Replace Q2. I I HI CH1=2V 11 1I . . . .
Table 5-4. Repairing the BOARD ASSEMBLY, C076
PSB/PSE
(Continued)
Problem
The voltage of the
+35 V line is below
thespecifiedvalue.
Cause
Q3,
ICI,
Pcl,
PC2
Q2
is
dead.
Checkpoint
Check the voltage waveforms at
Q3.
.
,
CH1=O.2V
TlME=2~s
Check the voltage waveforms at
Q2.
I
I
H
I
CH1=2V
1
1
1
I
Solution
Replace
D3,
Icl,
Pcl,
PC2
ZD51.
or
Replace
Q2.
.
.
.
.