Kenwood KDC-M907 Service Manual
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).
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
2
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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