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& Korea model
SERVICE MANUAL
MODEL DN-D4000
DOUBLE CD PLAYER
Please use this service manual with referring to the
operating instructions without fail.
Some illustrations using in this service manual are
slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: 03 (3837) 5321
X0171V.01 DE/CDM 0303
DN-D4000 1
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
LASER RADIATION
Do not stare into beam or view directly with optical instruments, class 3A laser product.
500V
1M
(1)
(2)
(1)
(2)
1
DN-D4000 2
DISASSEMBLY
(Follow the procedure below in reverse order when reassembling)
1. TOP COVER
(1) Remove 4 screws on the both sides, and 1 screw on rear side, then remove 1 upper screw.
(2) Pull up Top Cover.
2. FRONT PANEL
(1) Detach 2 Blind Labels on the bottom chassis.
(2) Move CD Mecha Rack in the arrow direction through the label detached chassis opening. Loader Frame comes out.
(3) Pull up Loader Panel while pulling it towards front.
(4) Remove 2 upper screws and 3 lower screws, and 2 screws on both sides.
(5) Detach Front Panel.
2
DN-D4000 3
3. MECHANISM UNIT
(1) Disconnect FFC cable.
(2) Rrmove 8 lower screws
(3) Remove 4 screws on rear side.
NOTES:
(a) Do notpull out aslant to prevent the FFC cable from damage.
(b) Do not fail to pull out AC cord from wall outlet befor disconnecting the FFCcable. If the ACcord is remained
plugged into wall outlet, the power is kept supplied in the unit, which may cause danger.
4. MAIN P.W.B.
(1) Remove 4 screws.
(2) Disconnect Connector.
(3) Detach Main P.W.B.
3
DN-D4000 4
5. CD MECHA.
(1) A gear is turned and a tray is opened.
(2) Remove 4 upper screws.
(3) Detach CD Mecha.
Gear
6. COVER ( REMOTE CONTROL UNIT )
(1) Remove 5 screws.
NOTE:
(a) Remote Control Unit and its back panel are connected with cables, so pay attention when removing the back pan-
el.
4
DN-D4000 6
BLOCK DIAGRAM
PLAYER> CONTROLLER>
LIMIT SW
MAIN UNIT 1 PANEL UNIT 1
SLIDE MOTOR M FLT LED BLOCK
16M DRAM 16M DRAM KEY
[14-MT-35GN]
SPINDLE [M11L1644SA-50T] [M11L1644SA-50T] JOG SHUTTLE
M FL601
MOTOR IC204 IC210 TR.SEL
DRIVER
[AN8785SB]
IC202 KEY MATRIX
LOADING MOTOR M FL DRIVER LED CONTROL
DIGITAL SERVO PROCESSOR PULSE BLOCK
DIG OUT 1 [M66005FP] [BU2090F]
CLOSE [MN6627911AC] TRANS
IC601 IC602
SW IC201
OPEN SW
+9VP
PITCH
FOCUS COIL SLIDE VR
[NJM78L05AT]
TRACKING COIL
IC118
MONITOR DIODE
LASER DIODE HEAD AMP
[AN22002A]
VCO
IC203 [TC74HCT7007AF] [BU2618FV]
[TC9246F]
IC112 IC113
IC114
DETECT E A B
OR D C F
SYSTEM uCOM
[MN102H60KDA]
IC101
CD MECHA 8M FLASH MEMORY
DAC
[PCM1748E] TR MUTE ANA OUT 1
UNIT 1 [ M29W800DB70] IC206
IC111
LED1 FADER 1 REMOTE CPU
UNIT
UNIT
+9V
[NJM7805FA(S)]
IC404
POWER UNIT
+9VP
+5V REG +5VD
RESET
[PST600C]
+3.3V REG +3.3VD +9V,-HB,F1,F2 IC403
+1.8V REG +1.8V RESET
BSY , MBSY +9V,-HB,F1,F2
[PST600C]
REMOTE uCOM
IC301 [SN74AHCT08PW] RC TXD,RC RXD [SN74AHCT08PW]
POWER +5V REG (AUDIO) +5VA [TMP86CM47U]
IC302 IC302
TRANS IC402
-5V REG (AUDIO) -5VA 8P MD
CABLE
-HB REG -HB
F2
F1
AC
CD MECHA
FADER 2
UNIT 2
DIG OUT 2 PANEL
MAIN UNIT 2 UNIT 2
LED2 ANA OUT 2
UNIT
6
DN-D4000 7
SERVICE PROGRAM
Required Measuring Implement
1. Reference disc (TCD784 or CO-74176)
1. What is Service Program
Service program is a special program intended for confirming servo functions etc.
2. Contents of Service Program
Switch on the power while pushing the CD1's PITCH BEND + button and CD2's OPEN/CLOSE button at the same
time. After actuating the servo program, select an aiming process number with the SELECT knob, A1 button, or A3 button.
Press the SELECT knob to execute the selected process, the process number is then displayed on the track indicator of the
display. To exit from the service program, just switch off the power.
Function
Contents
(Character-display)
Check Version with JOG dial.
com Version check 1. System com version No.: "SysVerXXXX"
(Version No.)
2. RC com version No.: "RC_VerXXXX"
Turn the JOG dial to display the logging error codes in the occurred order.
"ErrXX_E * * * " XX : occurred order E * * * : error code
10 error logs are memorized at maximum.
Error Code Check
Kinds of Error Code, displayed
(Error Data)
Error Code Table
Pressing SELECT knob enters to data erase mode. ("Err Clear?" is displayed.)
If the SELECT knob is pushed again, the memorized error data are cleared.
Total time span of servo function that counted by the hour is displayed.
"R.Tim XXXXH"
Total Running Time
(Total_Time) Note: No time is counted if disc tray is opened within 59 minutes.
Pressing SELECT knob enters to data erase mode. ("Time Clear?" is displayed.)
SELECT knob If the SELECT knob is pushed again, the memorized time data are cleared.
Starts automatic servo adjustment when the SELECT knob is pushed, and after
completing the adjustment, sort of the used disc is indicated. Data is selectable with
the JOG dial. "Servo_Data"
1. Focus gain data
2. Focus balance data
Automatic 3. Focus offset data
Servo Adjustment 4. Tracking gain data
call 5. Tracking balance data
6. Tracking offset data
7
DN-D4000 8
Function
Contents
(Character-display)
Loading a disc by OPEN/CLOSE button.
Block Error Rate Check Press the PLAY/PAUSE button. B.E.R. is displayed.
"E.Rate_XXX XXX : Block Error Rate
You can select the track by the JOG DIAL.
Starts automatic servo checking when the SELECT knob is pushed.
Loading a disc by OPEN/CLOSE button.
SELECT knob Servo Check "Lchk_Open" : Disc Tray is opened.
"Lchk_Wait" : During check.
"Lchk_OK!!" : Disc Tray is opened.
"LchkErr *** " : Error(E ***) is occurred.
All illuminations are lit.
Illumination Check All illuminations can be turned off to push the SELECT knob.
Press the SELECT knob again, all illuminations can be lit.
Adjustment Value indication at
Adjustment Item
character portions.
Focus Gain 0576 ~ 2304
Focus Balance -050 ~ +050
Focus Offset -005 ~ +005
Tracking Gain 0392 ~ 1569
Tracking Balance -025 ~ +025
Tracking Offset -005 ~ +005
* Reference data.
3. TEST MODE
Process No.
Function
(TRACK Contents
(Character-display)
Indication)
Starting with the PLAY/PAUSE button, it repeats open/close of the tray and
playback.
Heat Run
A1 button - All tracks are played back if the track count is less than 20. Only the first and last
(H/R1Normal)
tracks are played back if the tracks are more than 21. When any errors, it stops
and indicates error code (see Error Code Table).
Starting with the PLAY/PAUSE button, it repeats open/close of the tray, servo on,
Chucking Test and TOC read.
A2 button -
(H/R2_Tray ) The display shows the number of the tray operation. When any errors, it stops and
indicates error code (see Error Code Table ).
8
DN-D4000 9
4. Error Code Table
Error Code CONTENTS
E001 Unable to close the loader tray in the regulation time.
E002 Unable to open the loader tray in the regulation time.
E003 Inner circle switch ON error even if the time is over.
E004 Inner circle switch OFF error even if the time is over.
E005 The focus offset adjustment result is outside the regulation range.
E006 Unable to adjust the focus offset in the regulation time.
E007 The tracking offset adjustment result is outside the regulation range.
E008 Unable to adjust the tracking offset in the regulation time.
E009 The FE peak is outside the regulation range.
E00A The FE peak is outside the regulation range.
E00B Unable to adjust the focus rough gain in the regulation time.
E00C The focus rough gain is outside the regulation range.
E00D Unable to actuate focus in the regulation time.
E00E Unable to actuate tracking in the regulation time.
E00F Unable to adjust the tracking rough gain in the regulation time.
E010 The tracking rough gain is outside the regulation range.
E011 Unable to adjust the tracking balance in the regulation time.
E012 The tracking balance adjustment result is outside the regulation range.
E013 Focus servo down during automatic adjustment.
E014 Focus servo down during automatic adjustment.
E015 Unable to adjust the focus balance in the regulation time.
E016 The focus balance adjustment result is outside the regulation range.
E017 Track servo down during automatic adjustment.
E018 Unable to adjust the focus fine gain in the regulation time.
E019 The focus fine gain is outside the regulation range.
E01A Unable to adjust the tracking fine gain in the regulation time.
E01B The tracking fine gain is outside the regulation range.
E01C Unable to adjust automatically in the regulation time.
E01D Unable to read the subcode Q in the regulation time.
E01E Unable to read the TOC in the regulation time.
E01F Focus servo down during search (over the regulation time).
E020 Track servo down during search (over the regulation time).
E0216 * Servo error during search.
E0213 * Search error (over the regulation time).
E022 Discontinuity occurred, during write to the DRAM.
E023 The error which cannot be corrected to the read data.
E024 Unable to do the level detect.
E025 Unable to join data in the regulation time.
E026 The error rate when recording on the memory is over the regulation value.
E027 The subcode jump more than regulation.
E028 Servo error when power is turned on.
E029 Subcode Q error.
E030 Inter face error for both drives.
9
DN-D4000 10
COM VERSION UPGRADE
System