Xerox 3050 Service Manual page 109

2.2 POST 2,3,4,5,6 and 7 RAP Probable Cause Corrective Action
The number 1 or 2 is displayed on the
1.
There is a fault in the RAM memory. 1. Replace the Control PWB(A3) (REP 3.1).
Control Panel, or the display
is
blank.
The copier does not initialize.
The number
3 i s
displayed. The copier
2A.
The contents of the Control
EPROMs
does
2A.
Replace both Control EPROMs.
does not initialize. not agree with the checksum.
2B. The Control PWB (A3)
is
damaged. 2B. Replace the Control PWB (A3) (REP
3.1).
The number 4
is
displayed. The copier 3. There
is
a fault i n the Analog-to-Digital
3. On copiers built W/ 0 Tag/ MOD 16,
does not initialize, Converter or the Digital-to-Analog replace the LVPSl Driver
PWB (A2).
If
Converter.
the problem persists, replace the
Control PWB (A3) (REP 3.1).
On copiers built W/ Tag1
MOD 16,
replace the Control PWB
(A3)
(REP 3.1).
The number 5 i s displayed. The copier 4A. There is a fault in the printer port output 4A. Replace the Control PWB (A3) (REP
does not initialize. circuitry. 3.1).
48. There
is
a fault
in
the copier timing 48. Replace the Control PWB (A3) (REP 3.1).
circuitry.
If
the problem persists, replace the
LVPSI Driver PWB (AZ).
The number 6 i s displayed. The copier 5.
There i s a fault i n the Digital-to-Analog
5. Replace the LVPSI Driver PWB (A2). If
does not initialize. Converter. the problem persists, replace the
Control PWB (A3) (REP 3.1).
The number 7 i s displayed. The copier 6. There i s a fault i n the printer port output 6. Replace the Control PWB (A.3) (REP 3.1).
does not initialize. circuitry.
The following message i s displayed: 7. There is an internal fault i n the Language 7. Replace the Language EPROMs. If the
MESSAGE ROMS 1 AND 2 FAILED EPROMs. problem persists, replace the Control
CHECKSUM.
The copier does not PWB (A3) (REP 3.1).
initialize.
Primary and Secondary Language 8. There
is
a fault i n the EPROM 8. Replace the Language EPROM that
EPROMs are installed, but one of the corresponding t o the Language that cannot be selected. If the problem
languages cannot be selected. cannot be selected. persists, replace the Control PWB (A3)
(REP
3.1).
31 93
2.2 POST 2,3,4,5,6 and 7 RAP
2-1 57 3050