Ricoh MT-C1 Service Manual page 423

15 February 2006
SC No.
820 0702 Command cache error
820 0709 Data cache error
820 070A Data cache clear error
820 0801 TLB virtual address error
820 0804 TLB global error
820 0807 UTLB miss error
820 0808 TLB read miss error
820 0809 TLB write miss error
820 080A TLB mode file error
820 4002 Single-precision calculation error
820 4003 Double-precision calculation error
820 4004 Exception error
820 4005 Exception mask error
822 3003 HDD timeout
822 3004 Self-diagnostic command error
823 6101 MAC address SUM error
823 6104 PHY chip ID illegal
823 6105 PHY loopback error
824 1401 NVRAM verify error
826 1501 Clock error
826 15FF RTC non-detection error
826 0201 Resident memory verify error
828 0101 Boost trap code (CODE) error
828 0104 ROM FS error
828 0105 Forgery prevention error
829 0301 Option memory 0 verify error
829 0302 Option memory 0 configuration
information error
835 1102 Verify error
835 110C DMA verify error
835 1120 Loopback connector non-
detection
836 1601 Font ROM 0 error
837 1602 Font ROM 1 error
838 2701 Verify error
Symptom
4-35
B064 SERIES SERVICE MODE
Possible Cause
• CPU cache defective
• Controller board defective
• Memory error (insufficient speed)
• CPU device error
• Boot mode setting for CPU error
• Controller defective
• Insufficient memory
• CPU device defective (controller board
defective)
• CPU error (controller board defective)
• HDD defective
• HDD connector disconnected, defective
• ASIC device error (controller board
defective)
• HDD defective
• NIB (PHY) board defective
• Controller board defective
• NVRAM defective
• Optional NVRAM defective
• Incompatible NVRAM installed
• NVRAM battery defective
• Memory on controller board defective
• RAM DIMM defective
• Software storage error (re-install
software)
• Controller board defective
• ROM device error
• Forgery prevention chip defective
• Forgery prevention chip error
• Replace the controller, ROM, or RAM
DIMM
• Controller board internal memory error
• RAM DIMM defective
• Loopback connector error (controller
board defective)
• Loopback connector error
• Controller board defective
• Loopback connector not set
• Loopback connector error
• Controller board defective