Service Mode - Marantz MR2020 Service Manual

3 SERVICE MODE

1. How to set the service mode
(1) While holding the CLOCK and CLEAR buttons together,
put the mains plug to mains outlet.
(2) FL check mode will start.
(3) While in FL check mode, each time the FUNCTION button
pressed (within 2 seconds), the mode changes in the
following order.
TR FREQ (Tracking point frequency memory mode)
CD TEST (CD test mode)
TR FREQ (Tracking point frequency memory mode)
2. FL CHECK MODE
FL check mode will continue until change other mode.
3. TRACKING POINT FREQUENCY MEMORY MODE
This mode is not available for repair(This is for check in
factory.). If you set in this mode, some frequencies will
register in each preset memory.
REMARK
User programmed frequencies will be deleted.
While in Tracking point frequency memory mode, press the
MEMO button. Press the CLEAR and the DISPLAY buttons
together. The display shows "CLEAR" 2 seconds. Then all
memories will be clear.
4. CD TEST MODE
(1) Press the "+" button, then the sledge move to the outside.
Press the "-" button then the sledge move to the inside.
Press the CLEAR button while the sledge is moving, then
the sledge stop.
(2) Press the MEMO button, then the laser pick up unit is
giving out the beam. Press the MEMO button again then
the laser pick up unit stop beam out. All operations are
available without the Disc.
(3) While in CD test mode, CD play is available in opening
the top panel.
(4) If any ERROR is happened, the display shows "CD ERRX".
(X is a ERROR code.) The ERROR message will not be
clear until pressing STOP or POWER buttons.
Error Code
1 The sledge switch not turn on.
2 The sledge switch not turn off.
3 The laser pick up unit not focus.
4 The tracking is not fixed.
5 The spindle motor not locked.
5. How to stop the service mode
Press the POWER button. Then product will be in POWER
OFF (STAND-BY).
REMARK
The microprocessor will not be clear by this operation.
(Refer to "3. TRACKING POINT FREQUENCY MEMORY
MODE")
FL CHK (FL check mode)
Description
3-1