Self-Test - Canon LBP-1260 Service Manual

CHAPTER 2
E. Self-test
When the power is switched ON, the
printer executes the self-diagnosis program
for the video controller to check the video
controller and control panel status. This
function is called the self-test. The self test
procedure is as follows:
encountered during this step are
displayed on the Status indication
display as service calls.
2) After the CPU completes a self-
diagnosis, the video controller will also
execute a self-diagnosis. Any errors
encountered here are also displayed on
the Status indication display (LCD] as
service calls.
LCD are displayed. The communi-
cation between the CPU and the IOP
are subsequenently checked.
check will be performed. While the hsh
are being displayed, the RAM (internal
RAM and expanded RAM SIMM) will
mainly be checked, and the time will be
displayed depending upon the memory
capacity of the expanded RAM. The
following checks are made during this
time.
. Check whether an optional RAM
SIMM is installed (checksum check if
it is installed)
. Internal ROM checksum check
. Internal RAM check
. IOP check
. SCSI controller check
. Optional RAM SIMM check
. Engine check
. SRAM check
turned off. This state lasts for about 3
seconds.
diagnosis ends and the printer goes
into standby.
4) When the printer goes into standby,
t h e R E A D Y i n d i c a t o r ,
indicator, and the paper pick-up mode
indicator light, and "00 READY AUTO'
appears on the Status indication
display. If any operator call or error
occurs, it is indicated by an indicator
and the Status indication display.
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