Printronix p300 Maintenance Manual page 111

FROM SHEET 2
YES
Install original logic B
PCBA per para 5–44.
Replace power supply
PCBA per para 5–41.
Press TOP OF FORM
switch and check for
YES
B
FROM SHEET 2
Press ON LINE switch.
Observe ON LINE
GO TO SHEET 4
P300/P600 Troubleshooting
C
Symptom
gone
?
NO
symptom.
NO
Symptom
gone
?
indicator.
D
Figure 4–1. Confidence Check (3 of 4)
Replace PMD sensor
per para 5–37.
Press TOP OF FORM
switch and check for
symptom.
NO
Symptom
gone
?
YES
Refer to schematics
and troubleshoot
using standard
techniques. If problem
remains, contact
authorized distributor
service
representative.
4–5