Page 1
CD RECEIVER
KDC-M907
SERVICE MANUAL
© 2004-3 PRINTED IN JAPAN
B53-0147-00 (N) 1838
CD mechanism extension cord (24PIN) : W05-0934-00
Panel assy
(A64-3381-02)
NF
DC cord
(E30-4942-05)
DAB
PREOUT
Plastic cabinet assy
(A02-1497-13)
OFF
SRC
Front glass
(B10-4575-01)
LOUD
AUD
STATTP/SIN
REP MENU
SCN
GSM
PTY/D.REP
1/5
2/6
Remote con.assy
(A70-2026-05) RC-420
F.SEL
RDM
P.M/M.RDM
3/7 4/8
TIRDS
TI
ANG
SCRL
Escutcheon assy
(B07-3007-03)
Remote con.assy
(A70-0886-15)
Antenna adaptor
(T90-0523-05)
Escutcheon
(B07-3009-02)
Mounting hardware assy
(J21-9716-03)
Lever
(D10-4562-04) x2
Torsion coil spring
(G01-2924-04)
Screw set
(N99-1704-05)
Technical information is not in this service manual (block diagram, component description and microcomputer’s terminal description).
Please refer to service manual for KDC-M9021 (B51-7901-00).
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KDC-M907
TEST MODE
Test Mode
1. How to enter test mode
While holding the [1/5] key and the [3/7] ke y, reset the unit.
2. How to exit from test mode
While holding down the [4/8] key, reset the unit.
Note : Does not exit from test mode A CC OFF, Pow er OFF
or momentary power down.
3. Test mode reset status
• Sources are all OFF
• All display segment lit up
•Volume at -10dB (shows 30 on display)
• LOUD is OFF.
• CRSC is OFF regardless of whether switching function is
provided.
• SYSTEM Q is in FLAT
• BEEP sounds at momentarily pressing at any time.
4. Special displays in Tuner
When the following displa ys appear in tuner mode it sho ws
a problem with the front end.
•“TNE2P NG” : F/E is not aligned and EEPROM is in reset
(no settings) such as when shipped.
• “TNCON NG” : Cannot communicate with F/E (front-end).
5. K3I switching
Each time the Preset [6] key is pressed in Tuner mode,
switches one at a time through the following sequence :
AUT O→Forced Wide→Forced Middle→Forced
Narrow→AUTO.
When reset, displays the following in AUTO .
•AUTO : FMA
•Forced Wide : FMW
•Forced Middle : FMM
•Forced Narrow : FMN
6. CD receiver test mode specifications
• No automatic ejection during reset-start. Does not make
a CD check in reset with a CD loaded.
• Using the Track up key jumps to the following tracks.
No. 9 →No . 15→No. 10 →No . 11→No. 12→No. 13→No. 14
→and back to No. 9
• Using the Track down key mov es 1 trac k down w ards from
the track being played.
• When the total number of MP3 or WMA disc trac ks is 9 or
less, playback starts from the first track.
• With the model equipped with the MP3 or MP3/WMP
mechanism, the mechanism model name and version
number are displayed at the bottom line.
7. Audio items
• Momentarily pressing the [Q] key calls up audio adjustment mode.
• Pressing the [✽] key on the remote control calls up audio
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alignment mode.
• An initial item is set to Feder.
• Continuous forward is disabled on the remote control.
• Bass/Middle/T reb le/NF are settable in 3 steps of MIN/Center/MAX with the [Track up/down] keys .
• Balance is settable in 3 steps of Left MAX/Center/Right
MAX with the [Track up/down] ke ys.
•Fader is settable in 3 steps of Rear MAX/Center/Front MAX
with the [Track up/down] keys .
• HPF is settable in 2 steps of THRU/220Hz with the [Track
up/down] keys.
• LPF is settable in 2 steps of THRU/120Hz with the [Track
up/down] keys.
• Bass f/Bass Q/Bass EXT/Middle f/Middle Q/Treble f do
not appear in the audio alignment.
8. Menu items
• The [DNPP/SBF] keys on the remote control calls up Menu
mode.
• Continuous forward is disabled on the remote control.
9. Backup current measurement
The MUTE terminal turns off 2 seconds (not 15 seconds)
after being reset in ACC off (backup on). (The panel and
CD mechanisms are disabled during this time.)
10. Special displays during All-Off with all lamps on
The following displays appear when the [preset] keys are
pressed with all display segment lit up.
[1/5] •Version display (8 digits; Mo. Dy. Hr. Mn.)
key (Display) SYS XXXXXXXX system microprocessor
PAN XXXXXXXX panel microprocessor
•Serial No. display (8 digits)
(Display) Sno XXXXXXXX
[2/6] •Press once: Power on time display
key (Does not count during All-Off)
Press long: Clears the time display during power-on.
(Display) PonTim XXXXX MAX 65535 (time)
•Press once: CD operating time display.
Press long: Clears CD operating time.
(Display) CDTime XXXXX MAX 65535 (time)
[3/7] Press once: CD eject count displa y.
key Press long: Clears CD eject count display.
(Display) EjeTim XXXXX MAX 65535 (count)
[4/8] Press once: PANEL open/shut count display.
key Press long: Clears PANEL open/shut count display.
(Display) PnCnt XXXXX MAX 655350 (count)
11. Channel space switching (K/M type)
While holding the [1/5] key and the [4/8] ke y, reset the unit.
12. Others
•Automatic panel close is disabled when CD is inserted.
•Panel operation is disabled at Power-ON or Power-OFF.
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TEST MODE
KDC-M907
•Panel open and closes with press long the [Q] key.
• No displays such as “CODE OFF” during Power-ON.
• Pressing the [TI (AUTO)] key during changer operation
turns on 2 zone. Cancel by pressing the [TI (AUTO)] key
again. The P/S dot is lit during 2 zone.
• Pressing the [4/8] key for 1 second or more during All
OFF, calls up the Mask Key (security) write mode.
Security Items
1. Forced power-ON mode (all models)
Even when writing is permitted by the security function
(mask key), Power-on can be set for a 30 minute period
each time the reset key is pressed while holding down the
[Q] key and [4/8] keys. After 30 minutes elapses, can only
be restored by using reset.
2. How to register the security code for EEPROM
(F/E) replacement (coded security models)
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the [4/8] key to enter the MENU MODE.
3) While “Security” is displayed, press and hold the [Track up
or down] key f or a second to enter the secu-rity registration
mode.
4) Enter the code using the [FM/AM/Track up/T rac k down] ke ys.
FM key : Increments the number.
AM key : Decrements the number.
Track up key : Moves the cursor to the right.
Track down key : Moves the cursor to the left.
5) Hold do wn the [Track up] key for at least 3 seconds and the
message, “RE-ENTER” appears, so once again enter the
code according to Step 4) above.
6) Hold down the [Track up] key for at least 3 seconds, and
the message, “APPROVED” appears.
7) Cancel test mode . (See, 2. How to exit from the test mode.)
Note : All clear cannot be performed on the security code
for this model.
3. Simple way to clear the security code (K type only)
1) During code request mode, press the [Track up] key for at
least 3 seconds while holding down the [AUTO] key. (---will disappear)
2) Enter, “KCAR” with the remote controller as described below. (Same as on 01 model.)
• Press the remote controller [5] key twice, and press the
[Track up] key. (Enters a “K”)
• Press the remote controller [2] key three times, and press
the [Track up] key. (Enters a “C”)
• Press the remote controller [2] key once and press the
[Track up] key. (Enters an “A”)
• Press the remote controller [7] key twice, and press the
[Track up] key. (Enters an “R”)
3) Security function is canceled and unit sets to All-Off mode.
4) Code request mode appears if a mistake was made in entering the numbers.
4. Method of writing the Mask key while the EEPROM is
in the initial status
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the [4/8] k ey to enter the Mask k ey registr ation mode.
“TRANSMIT1” should be display ed now. The display at this
time should show “< >” in place of “[ ]”.
3) Point the Mask key remote toward the light sensor , and press
and hold its key f or more than 0.5 second.
4) When “TRANSMIT2” is displayed, press and hold the key
on the Mask key remote for more than 0.5 second again.
The first and second counter codes are not compared at
this time.
5) When “APPRO VED” is display ed, the write operation is complete. Now the demonstration mode is initiated and the test
mode is terminated.
Note : In the same way as previous models, if 30 minutes
have elapsed with no code written, an error occurs and the
power is turned OFF.
5. Method of initializing the Mask key
(How to reset the unit from the Mask key appro ved condition to the factory condition)
1) Enter the test mode. (See 1. How to enter the test mode)
2) “TRANSMIT1” is displayed and the Mask key entry request
mode is initiated. The display at this time should show “✽✽”
in place of “[ ]”.
3) Press and hold the key on the Master key remote for more
than 3 seconds.
4) When “TRANSMIT2” is displayed, press and hold the key
on the Master key remote for more than 3 seconds again.
5) When “APPROVED” is displayed, the Mask key is cleared,
the demonstration mode is initiated, the test mode is terminated and the unit returns to the factory condition.
6. Method of clearing all Mask key-related data
1) Enter the test mode. (See 1. How to enter the test mode)
2) Press the [4/8] k ey to enter the Mask k ey registr ation mode.
“TRANSMIT1” should be displayed now.
3) Point the Master key remote toward the light sensor, and
press and hold its key for more than 3 seconds (until the
level display shows the full condition).
4) When “TRANSMIT2” is displa y ed, hold the ke y on the Mask
key remote for more than 3 seconds again. If “TRANSMIT1”
is displayed in place of “TRANSMIT2”, restar t the procedure from step 3).
5) When “APPRO VED” is displa yed, all security data is cleared
and the unit returns to the condition before Mask key writing with the EEPROM in the initial status.
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