1. Service mode
1.1. Actions
The firmware version, display check, communication test of BUS, protection detection count and serial
number display appear in the display.
The memory is cleared and the unit is initialized.
* Initializes when the power supply is turned OFF.
• Settings return to default.
• Protection history is not initialized.
1.2. Starting up
Turn on the power. When the ID appears in the display, press and hold "
F.C.B.S. ID
" button for 5 sec-
onds or longer.
Turn the "
INPUT SELECTOR
" knob to the right after this to show the information from item "
1.3." in
the display.
Turning the "
INPUT SELECTOR
" knob to the left has no effect.
1.3. Display Order
q
System version →
w
Flashing of the display →
e
All off →
r
Communication test of BUS
→
t
Detection count for PROTECTION1 and 2 →
y
Detection count for PROTECTION3 and 4
→
u
Detection count for PROTECTION5 and 6 →
i
Serial number display ·····
Turn the power back on to cancel this mode.
q
System Version
L1
[VERSION]
L2
PM-12 /
L3
V******
\
: Region (U, N, K, F)
w
Lighting of the display
L1
¡¡¡¡¡¡¡¡¡
L2
¡¡¡¡¡¡¡¡¡
L3
¡¡¡¡¡¡¡¡¡
e
All off
L1
L2
L3
r
Communication test of BUS
L1
[BUS TEST]
L2
BUS OK
L3
・"
BUS_OK
" or "
BUS_NG
"
t
Detection count for PROTECTION 1 and 2
L1
[PROTECT]
L2
PROT-1:
*
L3
PROT-2:
*
y
Detection count for PROTECTION 3(SCCPIND)
and 4(FATAL)
L1
[PROTECT]
L2
PROT-3:
*
L3
PROT-4:
*
u
Detection count for PROTECTION 5(READY) and
6(MB_DOWN)
L1
[PROTECT]
L2
PROT-5:
*
L3
PROT-6:
*
i
Serial number display
L1
[SERIAL]
L2
*********
L3
*****
1.4. Clear PROTECTION History
(1) Display the protection detection number to clear protection history.
L1
[PROTECT]
L2
PROT-*: *
L3
PROT-*: *
(2) Press and hold the "
F.C.B.S. ID
" button for more than 5 second.
(3) "
CLEARED
" is shown on the display for 3 seconds.
L1
[PROTECT]
L2
CLEARED
L3
(4) All history for PROTECTION 1 to 6 is cleared.
1.5. Initialization item
No
Items
Default
1
INPUT SELECTOR
CD
2
VOLUME
- ∞
3
LEVEL TRIM
0.0(L/R)
4
ATT
- ∞
5
ATT (MUTE)
OFF
6
PHONO
MM
7
ID No.
0
8
SIDE ILLUMINATION
ON
9
AUTO STANDBY MODE
N : ON
F/U/K : OFF
10 POWER ON/STANDBY
ON
Before Servicing
This Unit
Electrical
Mechanical
Repair Information
Updating
49