Service Mode - Marantz ZC4001 Service Manual

4. SERVICE MODE

MAIN CPU (IC21), PLC Firmware Version and FLD Segment Check Mode.
1. Press the POWER ON/STANDBY button to turn on the unit, then wait for about 10 seconds.
2. Press the ENTER, CSTOP and EXT button simultaneously more than 5 seconds.
3. The FL display shows "ZC4001:yymmddcvv" (MAIN CPU version) and "MLD011RM Vx.xx" (PLC firmware version)
EX. :
MAIN CPU version
PLC firmware version
4. For FLD Segment check, Press ENTER button, vertical segments turns on.
5. Press ENTER button, next vertical segments turns on.
6. Press ENTER button, horizontal segments turns on.
7. Press ENTER button, next horizontal segments turns on.
8. Press ENTER button, all the FL segments turns on.
9. Press ENTER button, all the FL segments turns off.
10. For operation button check, when press the button of the unit or RC5/6 remote code is inputted, operation button name
is shown on FLD
11. Press POWER ON/STANDBY button more than 5 seconds, to quit the check mode.
After "CLEAR MEMORY" is shown on FLD, memory is cleared to default status.
HOW TO RESET THE UNIT
Should the operation or display seem to be abnormal, reset the unit with the following procedure.
The ZC4001 is turned on, press and hold the MUTE and STOP buttons simultaneously for 3 seconds or more.
Z C 4 0 0 1
M L D 0 1 1
5
: 0 6 0 3 0
R M V 0 .
7 c 3 0
4 0