Ricoh G-P2 Service Manual page 45

G160 Service Manual
SC
Symptom
[Level]
Clock error
An RTC device is
recognized, and the
[1501]
difference between the
[B]
RTC device and the CPU
exceeds the defined limit.
No RTC device is
recognized.
RTC not detected
[15FF]
The RTC device is not
[B]
detected.
827 Self-diagnostic Error: RAM
Verification error
Error is detected during a
[0201]
write/verify check for the
[B]
standard RAM (SDRAM
DIMM).
Resident memory error
[0202]
The SPD values in all RAM
[B]
DIMM are incorrect or
unreadable.
828 Self-diagnostic Error: ROM
Boost lap code error
The boot monitor and OS
program stored in the ROM
[0101]
DIMM is checked. If the check
[B]
sum of the program is
incorrect, this SC code is
displayed.
Possible Cause/Required Action
RTC defective
NVRAM without RTC installed
Backup battery discharged
1. Replace the NVRAM with another
NVRAM with an RTC device.
NVRAM without RTC installed
Backup battery discharged
1. Replace the NVRAM with another
NVRAM with an RTC device.
Loose connection
Defective SDRAM DIMM
Defective controller
1. Replace the SDRAM DIMM.
2. Replace the controller.
Defective RAM DIMM
Defective SPD ROM on RAM DIMM
Defective 12C bus
1. Replace the RAM DIMM.
Defective ROM DIMM
Defective controller
1. Replace the ROM DIMM.
2. Replace the controller.
38
23-Feb-06