Ricoh G108 - CONTROLLER SELF-DIAGNOSTICS

CONTROLLER SELF-DIAGNOSTICS
SM 5-47 G108
Service
Tables
5.4 CONTROLLER SELF-DIAGNOSTICS
5.4.1 OVERVIEW
There are three types of self-diagnostics for the controller:
• Power-on self-diagnostics: The machine automatically starts this self-diagnostics
when you turn on the main power switch.
• Detailed self-diagnostics: The machine does this self-diagnostics with the loop-
back connector (P/N G0219350)
• SC detection: The machine automatically does this self-diagnostics to detect SC
conditions at power-on or during operation.
This flowchart illustrates the process flow of the power-on and detailed self-
diagnostics:
Power ON
Diagnostic RAM Check
CPU Check
ASIC Check
Standard RAM
Conection Check
Optional RAM
Connection Check
Clock Generator Check
Standard NVRAM
Check
Font Header Check
Optional NVRAM Check
Real Time Clock Check
Network Check
Engine I/F Check
Interrupt Check
Memory Chip Check
Power-on or
Detailed
ROM Sum Check
Standard RAM Detailed
Check
Optional RAM Detailed
Check
Standard NVRAM
Detailed Check
Optional NVRAM
Detailed Check
Optinoal HDD Check
IEEE1284 Loop-back
Check
Real Time Clock
Detailed Check
Font ROM Sum Check
END
Power-on
Detailed
NG
SC821
NG
SC820
NG
SC838
NG
SC826
NG
SC828
NG
SC829
NG
SC826
NG
Error Logged
NG
Error Logged
NG
Error Logged
NG
Error Logged
A
NG
Error Logged
NG
Error Logged
NG
Error Logged
NG
Error Logged
NG
Error Logged
NG
Error Logged
A
NG
Not initialized
NG
SC829
NG
SC827
NG
SC824
NG
Not use optional RAM
Error Logged
G108S907.WMF