Gestetner G060, Service Manual

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570
CONTROLLER SELF-DIAGNOSTICS
SM 5-89 G570
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
D i a g n o s t i c R A M C h e c k
C P U C h e c k
A S I C C h e c k
S t a n d a r d R A M
C o n e c t i o n C h e c k
O p t i o n a l R A M
C o n n e c t i o n C h e c k
Clock Generator Check
S t a n d a r d N V R A M
C h e c k
F o n t H e a d e r C h e c k
O p t i o n a l N V R A M C h e c k
R e a l T i m e C l o c k C h e c k
N e t w o r k C h e c k
Interrupt Check
M e m o r y C h i p C h e c k
Power-on or
Detailed
R O M S u m C h e c k
Standard RAM Detailed
C h e c k
Optional RAM Detailed
C h e c k
S t a n d a r d N V R A M
Detailed Check
O p t i o n a l N V R A M
Detailed Check
O p t i n o a l H D D C h e c k
I E E E 1 2 8 4 L o o p - b a c k
C h e c k
R e a l T i m e C l o c k
Detailed Check
F o n t R O M S u m C h e c k
E N D
P o w e r - o n
D e t a i l e d
N G
S C 8 2 1
N G
S C 8 2 0
N G
S C 8 3 8
.'
S C 8 2 6
N G S C 8 2 8
N G S C 8 2 9
N G
S C 8 2 6
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
A
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
N G
E r r o r L o g g e d
A
N G Not initialized
N G
S C 8 2 9
N G
S C 8 2 7
N G
S C 8 2 4
N G
N o t u s e o p t i o n a l R A M
E r r o r L o g g e d
G570S503.WMF