Sharp AR-M350N Service Manual page 190

MAIN SUB
U1 01 Content Battery abnormality
Detail Backup SRAM battery voltage fall
Cause Battery life
Battery circuit abnormality
Check and Check that the battery voltage is about 2.5V
remedy or above.
Check the battery circuit.
U2 00 Content EEPROM read/write error (Controller)
Detail EEPROM write error
Cause EEPROM trouble
EEPROM is not initialized.
Controller PWB EEPROM access circuit
trouble
Check and Check that EEPROM is properly inserted.
remedy Save the counter/adjustment values with the
DIAG simulation.
Use DIAG (SIM16) to cancel U2 trouble.
Replace the Controller PWB.
11 Content Counter check sum error (Controller)
Detail Counter data area check sum error
Cause EEPROM trouble
Control circuit trouble by noise
Controller PWB EEPROM access circuit
trouble
Check and Check that EEPROM is properly inserted.
remedy Save the counter/adjustment values with the
DIAG simulation.
Use DIAG (SIM16) to cancel U2 trouble.
Replace the Controller PWB.
12 Content Adjustment value check sum error
(Controller)
Detail Adjustment data area check sum error
Cause EEPROM trouble
Control circuit trouble by noise
Controller PWB EEPROM access circuit
trouble
Check and Check that EEPROM is properly inserted.
remedy Save the counter/adjustment values with the
DIAG simulation.
Use DIAG (SIM16) to cancel U2 trouble.
Replace the Controller PWB.
90 Content EEPROM read/write error (Controller)
Detail PCU EEPROM write error
Cause EEPROM trouble
EEPROM is not initialized.
PCU PWB EEPROM access circuit trouble
Check and Check that EEPROM is properly inserted.
remedy Save the counter/adjustment values with the
DIAG simulation.
Use DIAG (SIM16) to cancel U2 trouble.
Replace the Controller PWB.
91 Content Memory check sum error (PCU)
Detail PCU memory check sum error
Cause EEPROM trouble
EEPROM is not initialized.
PCU PWB EEPROM access circuit trouble
Uninitialized E2PROM installed.
Check and Check that EEPROM is properly inserted.
remedy Save the counter/adjustment values with the
DIAG simulation.
Use DIAG (SIM16) to cancel U2 trouble.
Replace the Controller PWB.
MAIN SUB
U7 00
PF 00
AR-P350 TROUBLE CODES-7
Content RIC communication trouble
Detail RIC communication trouble
Communication cable test error after turning
on the power or exiting DIAG.
Cause Disconnection of connector and harness
RTC control PWB trouble
Control PWB (Controller) trouble
Malfunction by noise
Check and Canceled by turning OFF/ON the power.
remedy Check connector and harness in the
communication line.
Content RIC copy inhibit signal is received.
Detail Copy inhibit command from RIM (host) is
received.
Cause Judged by the host.
Check and Inform to the host.
remedy