Denon DN-C635 User manual

SERVICE MANUAL
STEREO CD/MP3 PLAYER
MODEL DN-C635
For U.S.A., Canada, Europe &
Korea model
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: [phone]
X0169V.02 DE/CDM 0302
Some illustrations using in this service manual are
slightly different from the actual set.
●●
本文中に使用しているイラストは、説明の都合上現物
と多少異なる場合があります。
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
●
本機の仕様は性能改良のため、予告なく変更すること
があります。
●
補修用性能部品の保有期間は、製造打切後8年です。
注 意
Ver. 2

2
2
DN-C635
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.
(1)
(2)
500V
1M
(1)
(2)

3
3
DN-C635
DISASSEMBLY
(To reassemble, reverse disassembly)
1. TOP COVER
(1) Remove 4 screws on both sides, 1 screw on the rear side, and 1 screw on the top side.
(2) Detach the Top Cover as shown in the arrow direction.
2. FRONT PANEL
(1) Remove 2 upper screws, 3 lower screws and 2 screws on the both side.
(2) Detach the Front Panel in the arrow direction.
Top cover
Front Panel

4
4
DN-C635
3. MECHANISM UNIT
(1) Remove the Loder Panel.
(2) Remove 4 screws fixing the Mechanism Unit and detach the Mechanism Unit.
Loader Panel
Mechanism Unit

5
5DN-C635
BLOCK DIAGRAM
MUTE
ST/MONO
SELECT MUTE
LED
FLT
P. U
16M DRAM
DRIVER
AN8785SB
HEAD AMP
AN22002A
CD MECH.
MOTOR
ACTUATOR
4M FLASH
ROM
KEY
±5V
±5V
±12V
REMOTE
PITCH
POWER
SUPLY
ROTALY
ENCORDER
DSP
MN662791
SYSTEM µCOM
MN102H60KDA
3.3V 5V
I/F
TC74HCT7007
SERIAL/
PARALLEL
CONVERSION
FLT
DRIVER
M66005FP
CLOCK
GEN.
CLOCK
FIX/VARI
SELECT
DAC
PCM1716E
MUTE
BUFFER
PARALLEL
SERIAL
RS232C
/422
TALLY OUT
CD OUT
H/P OUT
XLR OUT
EXT OUT
EXT IN
P. TRANS
DIGITAL
OUT
±12V
±5V
+9V
+5V
- HB
+3.3V
F1,F2

6
6DN-C635
LEVEL DIAGRAM
0dB=1Vrms
IC215
1 (7)
IC106
RCA
IC601 (602)
1
1 (7)
7
+2.9dB
0dB
+10dB
0dB
- 10dB
+20dB
+30dB

7
7DN-C635
WIRING DIAGRAM
23 22 21 20 19 18 17 16 15 14 13 12 11 10 987654321 12345
123456789
10 11 12 13 14 15 16 17 18 19 20 21 22 23 12345
(RD) 1 1
22
33
44
55
11 66
22 77
33 88
44 99
10 10
11 11
12 12
13 13
11
22
33
44
55
11
22
33
44
55
66
11
12
(BK) 22
33
12
(BK) 44
11 55
22 66
33 77
44 88
55 99
66 10 10
77 11 11
88 12 12
12 13 13
14 14
15 15
16 16
C
B
GND
CLOSE
LIMITSW-
SLED-
SLED+
LIMITSW+
SP-
VREF1
OPEN
LOAD+
H/P R
CAS IN
LOAD-
CAS OUT
EXT I/O
H/P R
CD MECH
FLDA
TRSLB-
CUEL
PRGL
H/P L
GND
KEYIN0
+3.3V
GND
LD
F-
GU-3511-4
POWER SW
UNIT
D
VCC
F
SP+
E
A
NC
F+
T+
T-
LPD
GND
FLCK
TRSLA-
PUSH-
PLYL
PTHL
KEYIN1
GND
H/P L
GND
GU-3510
MAIN UNIT
KEYIN2
FLRST-
FLCS-
GND
F1
AC
GU-3511-6
TRANS UNI
T
+3.3V
PITCH
PITCHC
GND
GU-3511-3
H/P UNIT
MUTE
REMOTE
+3.3V
GU-3511-1
DISPLAY UNIT
F2
-HB
GND
GU-3511-5 XLR UNIT
GND
GU-3511-2
SLIDE VR.
UNIT
-12V
+12V
CDOUT R
GND
CDOUT L
MUTE
CY231
CX022
CY022
CX231
CX052
CX051
CY052
CX081
CX062
CW081
CX161
CX021
CX041
CW131
CX131
CW041

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DN-C635
SERVICE PROGRAM
Required Measuring Implement
zReference disc (TCD784 or CO-74176)
1. What is Service Program
Service program is a special program intended for confirming servo functions etc.
2. µcom Version Check
zRefer to "Preset Functions and Operations" of the instruction manual.
zYou can check the µcom version.
3. Error Data Check
zSwitch on the power while pushing the button and REPEAT button at the same time.
zAfter actuating the error data check program, press the CD's or button to display the logging error codes
in the occurred order.
XX Err** XX: occurred order
Err**: error code (Refer to the "Error Code Table" Page 9.)
z10 error logs are memorized at maximum. Item 1 is newest data. Item 10 is oldest data. Item 2 is the 9th old data.
zPressing the PAUSE button enters to data erase mode. ("Err Clear?" is displayed.)
If the PAUSE button is pressed again, the memorized error data are cleared.
To cancel the data erase mode, press the STOP button.
zTo stop the Error Data check mode, please turn off the POWER switch.
NOTE: When the service is finished, delete the error logs.
4. Total Running Time
zSwitch on the power while pushing the PROG. PLAY ON/OFF button and A-B button at the same time.
Total time span of CD that counted by the hour is displayed.
CD XXXXh
NOTE: Time is counted if the disc tray is opened first 30 minutes.
zPressing the PAUSE button enters to data erase mode. ("Time Clear?" is displayed.)
If the PAUSE button is pressed again, the memorized time data are cleared.
To cancel the data erase mode, press the STOP button.
zTo stop the Total Running Time check mode, please turn off the POWER switch.
NOTE: When the replacing the associated parts, delete the ranning time.
5. B.E.R. Checks and Automatic Servo Adjustment Call
zSwitch on the power while pushing the button and END MON button at the same time.
And Loading a disc by OPEN/CLOSE button.
(1)Block Error Rate
Press the PLAY button. B.E.R. is displayed.
01Tr **m XXXX XXXX: Block Error Rate
You can select the track by the select knob.
(2)Tracking balance and Focus balance data
Press the TIME button. Tracking balance and Focus balance data is displayed.
2 ±XXX±@@@ XXX: Tracking balance
@@@: Focus balance
(3)Focus gain data
Press the END MON button. Focus gain data is displayed.
3 XXXX XXXX: Focus gain
(4)Tracking gain data
Press the REPEAT button. Tracking gain data is displayed.
4 XXXX XXXX: Tracking gain
(5)Tracking offset and Focus offset data
Press the A-B button. Tracking offset and Focus offset data is displayed.
5 ±XXX±@@@ XXX: Tracking offset
@@@: Focus offset
(6)Press the PLAY MODE button to select the Block Error Rate data.
(7)To stop the B.E.R. Check and Automatic Servo Adjustment Call mode,
please turn off the POWER switch.
No. botton Adjustment Item Adjustment Value indicator
Tracking Balance -025 ~ +025
Focus Balance -050 ~ +050
3 Focus Gain 0576 ~ 2304
4 Tracking Gain 0392 ~ 1569
Tracking Offset -005 ~ +005
Focus Offset -005 ~ +005
2
5

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9
DN-C635
6. Test Mode (Heat Run mode)
zSwitch on the power while pushing the FOLDER button and TIME button at the same time.
"000TroHR0000" is displayed. And the tray is opened.
(1)Hold the disc by the edges and place it on the disc tray.
(2)Starting with the OPEN/CLOSE button, it repeats open/close of the tray and playback.
***TrxHRXXXX ***: Track No.
x : o, c, s, t, r, and p
XXXX: Cycle quantity
All tracks are played back if the track count is less than 20.
Only the first and last tracks are played back if the tracks are more than 21.
When any errors, it stops and indicates error code (Refer to the Error Code Table).
(3)To stop the Test mode, please turn off the POWER switch.
7. Error Code Table
Error Code CONTENTS
Error 01 Unable to close the loader tray in the regulation time.
Error 02 Unable to open the loader tray in the regulation time.
Error 03 Inner circle switch ON error even if the time is over.
Error 04 Inner circle switch OFF error even if the time is over.
Error 05 The focus offset adjustment result is outside the regulation range.
Error 06 Unable to adjust the focus offset in the regulation time.
Error 07 The tracking offset adjustment result is outside the regulation range.
Error 08 Unable to adjust the tracking offset in the regulation time.
Error 09 The FE peak is outside the regulation range.
Error 0A The FE peak is outside the regulation range.
Error 0B Unable to adjust the focus rough gain in the regulation time.
Error 0C The focus rough gain is outside the regulation range.
Error 0D Unable to actuate focus in the regulation time.
Error 0E Unable to actuate tracking in the regulation time.
Error 0F Unable to adjust the tracking rough gain in the regulation time.
Error 10 The tracking rough gain is outside the regulation range.
Error 11 Unable to adjust the tracking balance in the regulation time.
Error 12 The tracking balance adjustment result is outside the regulation range.
Error 13 Focus servo down during automatic adjustment.
Error 14 Focus servo down during automatic adjustment.
Error 15 Unable to adjust the focus balance in the regulation time.
Error 16 The focus balance adjustment result is outside the regulation range.
Error 17 Track servo down during automatic adjustment.
Error 18 Unable to adjust the focus fine gain in the regulation time.
Error 19 The focus fine gain is outside the regulation range.
Error 1A Unable to adjust the tracking fine gain in the regulation time.
Error 1B The tracking fine gain is outside the regulation range.
Error 1C Unable to adjust automatically in the regulation time.
Error 1D Unable to read the subcode Q in the regulation time.
Error 1E Unable to read the TOC in the regulation time.
Error 1F Focus servo down during search (over the regulation time).
Error 20 Track servo down during search (over the regulation time).
Error 2116 Servo error during search.
Error 2103 Search error (over the regulation time).
Error 22 Discontinuity occurred, during write to the DRAM.
Error 23 The error which cannot be corrected to the read data.
Error 24 Unable to do the level detect.
Error 25 Unable to join data in the regulation time.
Error 26 The error rate when recording on the memory is over the regulation value.
Error 27 The subcode jump more than regulation.

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DN-C635
µCOM VERSION UPGRADE
System µcom can be upgraded in the following manner.
Version Upgrade Method
1.Record the version upgrade software on a CD-R or CD-RW disc,
only as one file with the format ISO9660 Mode-1.
The file name of the supplied version upgrade software should be used as is and this disc needs
to finalize.
2.Hold the disc by the edges and place it on the disc tray.
3.Press the OPEN/CLOSE button to start the version upgrade.
"Version Up"→"Push Play!" "xxxx->XXXX" are displayed.
xxxx : current version
XXXX : upgrade version
4.Press the PLAY button.
"Now Writing" →"Writing-XXX" are displayed.
XXX : count up from 000 to129
5.When the version upgrade is finished, "Complete!" is indicated.
6.Turn off the power once and turn on again.
Press the OPEN/CLOSE button and remove the disc.
NOTE: When the power is turned off before "Complete!" is displayed, µcom version is not written correctly.