Epson Stylus Color 1520 Service Manual

Troubleshooting
Rev. A
5-
9
5.3 Repair of the C172 PSB/PSE Board at Component Level
This section contains information which enables you to repair and replace the components on the
electrical board (C172 PSB/PSE). Table 5-5 lists the potential causes for each symptom in order of
possibility, with which you are able to find and repair the defective part.
Table 5-5. Component Repair of the C172 PSB/PSE Board
Symptom Condition Cause Checkpoint Solution
The printer
does not
+42 VDC is
not output.
Fuse (F1) is open. Check visually if the fuse is
normal.
Replace the fuse F1.
operate at all. Transformer (T1) is
open.
Check the transformer using a
multimeter.
Replace the
transformer T1.
Q1 is dead. Check the waveform at drain. Replace the Q1.
Q2 or Q3 is dead. Check the waveform at
corrector.
Replace the Q2 or
Q3.
PC1 is dead. Check the voltage in lowering
at the pin 5 or 7.
Replace PC1.
+5 VDC is
not output.
L4962 is dead. Check the reference waveform
at the pin 5.
Replace the L4962.
Check the output waveform at
pin 7.

Epson Stylus Color 1520 Specifications

General

Color	Yes
Maximum resolution	600 x 1200 DPI
Print speed (black, normal quality, A4/US Letter)	- ppm
Maximum input capacity	100 sheets
Envelopes sizes	10, C5, DL
Standard media sizes	4\
Paper tray media types	Envelopes, Labels, Plain paper
Non-ISO print media sizes	Legal
ISO A-series sizes (A0...A9)	A4
ISO B-series sizes (B0...B9)	B5
Power requirements	120V AC, 50/60 Hz
Printing noise level	45 dB
Maximum operating temperature range (T-T)	-20 - 60 °C
Market positioning	Home & office