Gestetner G060 Service Manual page 627

5.8 CONTROLLER SELF-DIAGNOSTICS
5.8.1 OVERVIEW
There are three types of self-diagnostics for the controller.
• Power-on self-diagnostics: The machine automatically starts the self-diagnostics
just after the power has been turned on.
• Detailed self-diagnostics: The machine does the detailed self-diagnostics by
using a loop-back connector (P/N G0219350)
• SC detection: The machine automatically detects SC conditions at power-on or
during operation.
The following shows the workflow of the power-on and detailed self-diagnostics.
P o w e r O N
Diagnostic RAM Check
C P U C h e c k
ASIC Check
Standard RAM
Conection Check
Optional RAM
Connection Check
Clock Generator Check
S t a n d a r d N V R A M
C h e c k
Optional NVRAM Check
Font Header Check
Real Time Clock Check
Network Check
Interrupt Check
Memory Chip Check
A
SM
Not initialized
N G
S C 8 2 0
N G
S C 8 2 1
N G
Standard RAM Detailed
N G S C 8 2 7
Optional RAM Detailed
S C 8 2 9
N G
S t a n d a r d N V R A M
S C 8 3 8
N G
Optinoal HDD Check
S C 8 2 4
N G
IEEE1284 Loop-back
N G
Error Logged
.'
S C 8 2 6
F o n t R O M S u m C h e c k
N G
Error Logged
N G
Error Logged
N G
Error Logged
5-89
CONTROLLER SELF-DIAGNOSTICS
A
Power-on or
Detailed
Detailed
R O M S u m C h e c k S C 8 2 8
N G
S C 8 2 9
N G
C h e c k
N G
C h e c k
Not use optional RAM
Error Logged
N G
Detailed Check
Error Logged
Optional NVRAM
N G
Detailed Check
Error Logged
N G
Error Logged
N G
C h e c k
Error Logged
Real Time Clock
S C 8 2 6
N G
Detailed Check
N G
Error Logged
E N D
Power-on
G570S503.WMF
G570