Kenwood KDC 455 UW Service Manual

Page 1

CD RECEIVER

KDC-4551UB/455UW KENWOOD
KDC'4651 U RY Kenwood Corporation
KDC-U449/U5049

S E RVI C E MAN UAL Ssilégéiomziim JAPAN

Tuner setting adjustment after replacing E2PROM

After replacing E2PROM (IC771 on X34), tuner setting adjustment is needed.
The adjustment is that to perform the TUNER Setting Adjustment Mode (Page 5)
in the Tuner Test Mode Specification of Production Test Mode.

KDC-4451UB : Panel assy (GE20277-001A) KDC-455UW : Panel assy (GE20277-002A)

KENWOOD

KDC-U5049 : Panel assy (GE20277-010A) TDF SPARE-PANEL

MAIN UNIT NAME TDF PARTS No. TDF NAME
KDC-4551UB Y33-3382-71 TDF-4551UB
KDC»455UW Y33-3382-72 TDF-455UW
KDC-4651URY Y33-3382-73 TDF-4651URY
KDC-U449 Y33-3380-21 TDF-U449
KDC-U5049 Y33-3383-01 TDF-U5049

Mounting sleeve assy * Car cable * Car cable * Carrying case * Remote control unit (RC-405)

(GE34134-001A) (QAM1341-001) (E30-6937-05) (W01-1710»05) (A70- -2104- -05)

jfife
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9//;

4} \rv
* Tap screw (2x8) * Screw set Hook * Hard case assy Trim plate
(N80»2008-43) (N99-1757-15) (GE4051 0-001 A) X2 (A02-2757-13) (G E20274-001 A)

* Depends on the model. Refer to the parts list.

This product uses Lead Free widen.

This product complies with the ROHS directive for the European market.

Page 3

TEST MODE

1. Panel
ACCENT

KDC-4551UB/455UW/4651URY
KDC-U449/U5049

KENWOOD

RETURN VOL

2. How to enter each Test Mode

Test Mode name

Operation

Production Test Mode Press and hold [1] key and [3] key and reset.

Service Test Mode

In the STANDBY source, while pressing and holding [2] key, press [6] key for 7 seconds
(Starting to press [2] key and [6] key at the same time can not be entered into the mode)

DC Error Information Mode Press and hold [3] key and [6] key and reset.

% Transition to Test Mode shall be available during DC Error detection.

3. How to release each Test Mode
0 Reset

0 Momentary voltage drop

0 ACC OFF

0 POWER OFF

0 Panel Detach

4. Production Test Mode

0 Default status immediately after the mode activation
It shall be same as normal RST start in other than the below setting.

Difference in action

Details
Period to prohibit TEL/LINE MUTE immediately after activation
1 second
(normally 10 seconds)
Mecha Initialize Action Prohibited
Write-in to E2PROM when detecting a DC error Prohibited
Demo Mode ON/OFF Setting Menu Prohibited

Power supply during ACC OFF (Back Up On)

MUTE terminal turns OFF after 2 seconds

BEEP sound Beep with short-pressing in any functions
Volume 30 (-10dB)
BASS BOOST/LOUD OFF
EQ NATURAL
Various setting value Fader/Balance Center
DEMO Mode Setting OFF
AUX Setting ON1

NAVl MUTE Setting for Japan

Detecting function valid (A'I'l')

Page 6

KDC-4551UB/455UW/4651URY
KDC-U449/U5049

TEST MODE

4. Operation of return to TUNER Test Mode

Operation

Display content

Details

RETURN

Mode release

DDDDDDDDDDDDD

Return to TUNER Test Mode.

O BAND switch list

Type BAND1 BAND2 BANDS BAND4 BAND5 BANDS Details
E (DFMt FM2 FM3 @MW/LW - - (DsCZaG). ..
M/c (DFMt FM2 FM3 @Mw ®SW1 @swz (i)s(i>aa<3)a 0 CD Test Mode Specification
It shall be the same as normal RST start in other than the below setting.
Content Details
Playback track from top No.9
Default for Display mode Play time
<>Operations in CDDA playback
Operation Display content Details
Pressed Track up depend on different cases.
Case 1: Track>23 No.9aNo.15sNo.10aNo.22aNo.12
aNo.13~>No.14~>No.9
H S ' It k
' pec'a 0 p D D D D D D D D D D D D D Case 2: Track<8 No.1sNo.2sNo.3sumiI Last Track
Case 3: 8 No.9aNo.15aNo.10aUntii Last Track
8 ' It k
i« daiila rac One-by-one Track down by sequence follow Track No.
HCt/2 Jud e HC1/2 Judgement Infomation.
g _ H01: H01 mecha (for this model)
1 ment Information
Dis Ia H02: H02 mecha
(T0999) p y =t=**: Impossible of Judgement
Normal Display E D D D D E D D Normal Display
Special jump Jump to No.28
3
operation D D D D D D D D D D D D D (Scratch 0.7mm for MUSlC line vibration test)
8 ecial 'um
4 ogerat'ojn p D D D D D D D D D D D D D Jump to No.14(Damaged disc TCD-731RA Tr14)
|
. . Jumpto No.15
Specral Jump .
5 0 eration D D D D D D D D D D D D B Set Volume value at 26 (for error operation FCT check of
p 20Hz OdB Dc protection)
Special jump Jump to No.9 if the other than track No.9 is playing.
6
operation D D D D D D D D D D D D D Jump to No.22 ifthe track No.9 is playing.

5. Service Test Mode

0 Default status immediately after the mode activation
It shall be same as the normal activation.

0 Mode structure
Service Test Mode is enabled only STANDBY source.