Ricoh B064 - Page 395

B140 SERIES AND G126 SERVICE MODE
SM 4-71 B064 Series/B140 Series/G126
Trouble-
shooting
SC No. Symptom Possible Cause
820 0702 Command cache error
• CPU cache defective
• Controller board defective
• Memory error (insufficient speed)
820 0709 Data cache error
820 070A Data cache clear error
• CPU device error
• Boot mode setting for CPU error
• Controller defective
• Insufficient memory
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
• CPU device defective (controller board
defective)
820 4002 Single-precision calculation error
820 4003 Double-precision calculation error
820 4004 Exception error
820 4005 Exception mask error
• CPU error (controller board defective)
822 3003 HDD timeout
• HDD defective
• HDD connector disconnected, defective
• ASIC device error (controller board
defective)
822 3004 Self-diagnostic command error
• HDD defective
823 6101 MAC address SUM error
823 6104 PHY chip ID illegal
823 6105 PHY loopback error
• NIB (PHY) board defective
• Controller board defective
824 1401 NVRAM verify error
• NVRAM defective
826 1501 Clock error
• Optional NVRAM defective
826 15FF RTC non-detection error
• Incompatible NVRAM installed
• NVRAM battery defective
826 0201 Resident memory verify error
• Memory on controller board defective
• RAM DIMM defective
828 0101 Boost trap code (CODE) error
• Software storage error (re-install
software)
• Controller board defective
828 0104 ROM FS error
• ROM device error
828 0105 Forgery prevention error
• Forgery prevention chip defective
• Forgery prevention chip error
• Replace the controller, ROM, or RAM
DIMM
829 0301 Option memory 0 verify error
829 0302
Option memory 0 configuration
information error
• Controller board internal memory error
• RAM DIMM defective
835 1102 Verify error
• Loopback connector error (controller
board defective)
835 110C DMA verify error
• Loopback connector error
• Controller board defective
835 1120
Loopback connector non-
detection
836 1601 Font ROM 0 error
837 1602 Font ROM 1 error
838 2701 Verify error
• Loopback connector not set
• Loopback connector error
• Controller board defective