Ricoh D014 - Page 500

Service Call Tables
D014/D015/D078/D079 4-50 SM
Mailbox-to-copier communication error
SC624 D
Communication between the
mailbox and copier is
interrupted. An ACK/NCK
signal was not received within
100 ms after a data frame is
sent and 3 retries failed.
 Mailbox cable disconnected,
defective
 Mailbox main board defective
 VBCU defective
 PSU defective
VBCU-DTMB (DMC1) communication error
SC625 B
Communication between the
VBCU and DMC (main) was
interrupted. An ACK/NAK
signal was not received within
100 ms after a data frame was
sent and three retries failed.
 Check the DTMB harness
connections at the DTMB and
VBCU
 DTMB defective
 PSU defective
 VBCU defective
 5V power supply defective
VBCU-DTMB (DMC2) communication error
SC626 B
Communication between the
VBCU and DMC (sub) was
interrupted. An ACK/NAK
signal was not received within
100 ms after a data frame was
sent and three retries failed.
 Check the DTMB harness
connections at the DTMB and
VBCU
 DTMB defective
 VBCU defective
 PSU defective
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA