Ricoh D129 Service Manual page 515

Service Call Conditions
Incorrect dial up connection
-001: Program parameter error
-002: Program execution error
651 C
An unexpected error occurs when the modem (Embedded RCG-M) tries to
call the center with a dial up connection.

Caused by a software bug
ID2 mismatching
ID2 for @Remote certification is mismatching between the controller board
and NVRAM.

Used controller board installed

652 D Used NVRAM installed
An unexpected error occurs when the modem (Embedded RCG-M) tries to
call the center with a dial up connection.
1. Install the correct controller board or new controller board.
2. Install the correct NVRAM or new NVRAM.
ID2 error
ID2 stored in the NVRAM is incorrect.

Used NVRAM installed
653 D
An unexpected error occurs when the modem (Embedded RCG-M) tries to
call the center with a dial up connection.
Clear the ID2 in the NVRAM, and then input a correct ID2.
D129/D130 6-26 SM