Sharp CDC2900 Support Question
Sharp CDC2900 Support Question
Find answers below for this question about Sharp CDC2900 - 3-CD Compact Stereo System.Need a Sharp CDC2900 manual? We have 1 online manual for this item!
Question posted by moniquecanuel55 on December 9th, 2020
Mon Laser Ne Fonctionne Pas, Il Dit No Disk, Quoi Faire
dLe lecteur cd dit pas de disque quoi faire
Current Answers
Answer #1: Posted by hzplj9 on December 9th, 2020 1:32 PM
hzplj9
Member since:
June 25th, 2012 Points: 4,875,670
Member since:
June 25th, 2012 Points: 4,875,670
This is a link to the service manual for your device. If you have any technical knowledge or need an engineer to investigate the problem it will be an asset.
Firstly try using a disk cleaner in the cd tray and run that. If that does not work it is likely that a belt could be broken or the actual laser unit has failed. Both of the second suggestions require dis-assembly and repair by a technician..
Il s'agit d'un lien vers le manuel d'entretien de votre appareil. Si vous avez des connaissances techniques ou si vous avez besoin d'un ingénieur pour étudier le problème, ce sera un atout.
Essayez d'abord d'utiliser un nettoyeur de disque dans le tiroir à CD et lancez-le. Si cela ne fonctionne pas, il est probable qu'une courroie soit cassée ou que l'unité laser proprement dite soit tombée en panne. La deuxième suggestion nécessite un démontage et une réparation par un technicien...
Traduit avec www.DeepL.com/Translator (version gratuite)
Hope that helps. J'espère que ça vous aidera.
Related Sharp CDC2900 Manual Pages
Service Manual - Page 1
... for after sales service only. O1 -RATION
This document has been published to change without notice. CONTENTS
Page IMPORTANT SERVICE NOTES (For U.S.A. S3908CDC622//
CD-C622
CD-C622 mini component system consisting of user-safety the set should be restored to its original condition and only parts identical to those specified be used .
Only...
Service Manual - Page 2
... or that no shock hazard exists, check for leakage current in the following safety checks. 1. Any reading of 0.3 volt RMS (this corresponds to the owner.
- 2 - CD-C622/C2900
FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. Inspect all protective devices such as conduit or...
Service Manual - Page 3
conductor laser pickup
D/A Converter:
1-...compact disc
player
Signal readout:
Non-contact, 3-beam semi- MPO; 108 W (54 W + 54 W) (10 % T.H.D.) RMS; 60 W (30 W + 30 W) (10 % T.H.D.) Rear speakers; MPO; 36 W (18 W + 18 W) (10 % T.H.D.) RMS; 20 W (10 W + 10 W) (10 % T.H.D.) 50 watts minimum RMS per channel into 6 ohms from 60 Hz to 20 kHz, 10 % total harmonic distortion Front speakers; CD...
Service Manual - Page 4
.... Rear Speaker Terminals (CD-C622)
6. Speaker Terminals (CD-C2900)
1
2
- 4 -
3 4 5
6
(Illistration: CD-C622) Video/Auxiliary (Audio Signal) Input Sockets
5. Memory/Set Button 31. (CD/TAPE) Stop Button 32. (TAPE) Play Button (CD) Play/Repeat Button 33. FM Stereo Indicator 9. (CD) Repeat Indicator 10. (CD) Play Indicator 11. (CD) Pause Indicator 12. CD-C622/C2900
CD-C622/C2900
Front...
Service Manual - Page 5
...
5
11
6
7
12
13 14 15 16 17 18
19 20
21
23
22
- 5 - Speaker Wire
Rear Speaker (CD-C622 Only) GBOXS0021AWM1 1. Track Up/Cue Button 8. Super Tweeter 2. Pause Button 5. Bass Reflex Ducts 4. Speaker Wire
CD-C622/C2900
Remote Control 1. Speaker Wire
CP-C2900
1. Memory Button 4. Disc Skip Button 9. Play/Repeat Button 10...
Service Manual - Page 6
... displayed.)
Note: In the event of the stored memory contents (clock and timer settings, and tuner and CD presets). OPERATION MANUAL
CD-C622/C2900 - 6 - CLOCK
POWER MEMORY/ SET
TUNING/ TIME ( )
2 3 4
AM 12:... power supply is first installed
or it down the POWER button for the 12-hour (AM 12:00) system.
PM 11:59)
"AM 0:00" → The 12-hour display will change automatically to "PM"....
Service Manual - Page 9
...compact disc out of integrated circuits and other circuits when servicing.
(B1)x1 ø3x8mm
Top Cabinet
CD-C622/C2900
STEP REMOVAL
PROCEDURE
FIGURE
1 Top Cabinet
1. After servicing
the unit, be
removed when disassembling the unit. Turn on the power supply,
9-2
CD...J1) x1 10-2 2. After that, push forward the CD player base. Take off nylon bands or wire holders where...
Service Manual - Page 10
...10-5
( L1 ) x1 ø3 x10mm
Disc Tray
( L2 ) x1
( L1 ) x1 ø3 x10mm
CD Player Unit
( L2 ) x1
Figure 10-3
- 10 - CD-C622/C2900
(E2)x2
(E3)x1 (E5)x1
(E2)x2 (G1)x1
(E4)x1
(E1)x1 ø...3x10mm
Front Panel
( M2 ) x2
( M1 ) x1 ø3 x10mm
CD Servo PWB
(E1)x2 ø3x8mm
Main PWB
(F1)x1 ø3x8mm
Switch PWB
Figure 10-1
(G1)x1
Front Panel
(G2...
Service Manual - Page 11
Screw A3) x4
Note: The rear speakers can be easily disassembled. Therefore the disassembling method is not discribed. CD-C622/C2900
CP-C622
Front Panel (A1)x1
Piezo
(A3)x4
(A2)x2
ø4x12mm
Woofer
Figure 11-1
CP-C2900 STEP REMOVAL
1 Front Speaker
PROCEDURE
...
Service Manual - Page 12
... the optical pickup from electrostatic damage.
( B1 ) x2
Stop Washer
ø2.6 x6mm ( B3 ) x1
Pickup
Shaft ( B2 ) x1
Gear ( B4 ) x1
Figure 12-2
CD Mechanism
- 12 - Remove the pickup. CD-C622/C2900
REMOVING AND REINSTALLING THE MAIN PARTS
CD MECHANISM SECTION
Perform steps 1, 2, 3, 13 and 14 of connector so as to remove the...
Service Manual - Page 13
...; VCO Frequency
Frequency
Frequency Display
Adjusting Parts
Instrument Connection
98.00 MHz (60 dB)
98.00 MHz
VR351*
* Adjust for 76 kHz ± 200 Hz. CD-C622/C2900
ADJUSTMENT
MECHANISM SECTION
• Driving Force Check
Torque Meter
Specified Value
Play: TW-2412
Tape 1: Over 80 g Tape 2: Over 80 g
• Torque Check...
Service Manual - Page 14
... gain
This automatic adjustment is performed each disc is manual operation. LASER ON
Tracking on the spot. IL is performed, and the ordinary PLAY is changed. If the following...
1V/diV
IC 1 7
TE
2
Figure 14-4
- 14 - Since this CD system incorporates the following key is pressed during PLAY, it . IL is not necessary to readjust it is possible to specify directly any Track No....
Service Manual - Page 15
...Board for this symbol P means micro-micro-farad and the unit of the capacitor without such a symbol is being played back.
3. CD-C622/C2900
NOTES ON SCHEMATIC DIAGRAM
• Resistor: To differentiate the units of resistors, such symbol as K and M are subject ...the chas- In the power section, a tape is microfarad. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2.
Service Manual - Page 16
CD-C622/C2900
1 5ms 0.50 V IC1 20 F.E
2 5ms 5.0 V IC1 54 DRF
3
0.5ms 1.00 V
HF
4
0.5ms 5.0 V
HFL
5
0.5ms 5.0 V
TES
3
...
8
0.5ms 0.50 V
JP
9
0.5ms 1.00 V
TE
6
50ms 10.0 V
JP+
7
50ms 10.0 V
JP-
8
50ms 0.50 V
JP
9
50ms 1.00 V
TE
WAVEFORMS OF CD CIRCUIT
STOP FOCUS
PLAY SERCH
3 1
6 0.5ms 10.0 V JP+
7 0.5ms 10.0 V JP-
8 0.5ms 0.50 V JP
9 0.5ms 1.00 V TE
CUE
1 2 3
10 ...
Service Manual - Page 17
... COIL TRACKING COIL
M2 SLED MOTOR
M
M1 SPINDLE MOTOR
M
PICKUP IN SW4
TO FD SPO NC SLD SL- CD-C622/C2900
Figure 17 BLOCK DIAGRAM (1/3) - 17 - WRQ
51 62 ~ 64 53 ~ 58 26 33 38...37
27
36
8 ~ 14 21 22 29 ~ 35
+B1 +B5
PU-IN SW
10 GND (D)
10
9 MECHA UP
9
8 GND (D)
8
7 DISK NO.
7
6 OPEN/CLOSE 6
5 GND (D)
5
4 M-
4
3 M+
3
2 GND (M)
2
1
1
CNP10
CNS10
SW2 MECHA UP SW3 DISC ...
Service Manual - Page 20
...
B 2
3 3B
F 1
4 4E
5 5F
CNP1
C
LD
K
MON
E
B
LD GND
A F C
LT0H30M1
TR+
D
FO+
FO-
REF...
4 F
REF - FOSTA TOSTA 2FREQ LASER FSTA 8/12CM SLOF
+ LATOH
FSC
46...
2 2
FO+ 3
3 3
FO- 4
4 4
GND 5
5 5
PD 6
6 6
VR 7
7 7
F
LD 8
8 8 LD CNP2
CNP3
CD MOTOR PWB-C
CNP3A CNS3B CNS3A
M M1
+
SPINDLE
MOTOR
- NC 48
-
- -
1
FIN2 REF
-
2 FIN1 EREF -
SW4 PICKUP
IN
6 66 6 ...
Service Manual - Page 42
...check the following items. Remove the cabinet and follow the troubleshooting instructions.
If the CD cleaner brushes become worn out earlier then please replace the cleaner disc. in contact ... or 2 drops of the cleaning fluid to the brush on the laser pickup lens. CAUTION
The CD lens cleaner should be used on car CD player or on the objective lens during use a cleaning disc designed...
Service Manual - Page 45
...IL is possible,
Yes play -back
2 1 3 4
Figure 45-2
Check waveform of IC1 pin 7 (TE). The waveform shown in case of IC 1
Fig.45-3 appears, and no-
Check the VCO-PLL system.
Yes
If the disc is loaded.
CD...(16) - (21) (focus servo circuit).
Check the spin system. Yes
Is HF waveform normal (see the Fig.45-1, 2)?
Check the laser diode driver. Yes pin 8 to pin 15, and IC 5...
Service Manual - Page 47
... and input. Pin for input of DC component of disk. Pin to compose focusing phase compensation constant between FD ...to connect gain setting resistor in the digital system. Spindle control signal output pin. Pin to... is generated through addition with F pin. Connection pin for photodiode of pickup. CD-C622/C2900
FUNCTION TABLE OF IC
IC1 VHiLA9241M/-1: Servo Amp. (LA9241M) (1/2)
...
Service Manual - Page 48
... to connect pass control for servo system and digital system. APC circuit output pin.
AGND SNPC SPI
25 26 SPG SP-
27
28
SPD SLEQ
29
30 31
32
SLD
SL- SL+
JP- CD-C622/C2900
IC1 VHiLA9241M/-1:Servo Amp.(...48 - FA
FA-
20 21 22 23
24
FE FE- Pin to set defect detection time constant of disk. VCC1 64
FIN2 1
LDS
LDD
BH1 PH1
LP2
63
62
61
60
59
APC
RF DET
VR REFI VCC2...
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