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FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER
TO THE OPERATION MANUAL.
CD-C621H
General
Power source:
Power consumption:
Dimensions:
Weight:
Amplifier section
Output power:
(Except for UK)
Output power:
(For UK)
Input terminal:
Output terminals:
Compact disc player section
Type:
Signal readout:
D/A Converter:
Frequency response:
Dynamic range:
Tuner section
Frequency range:
SPECIFICATIONS
AC 230 V, 50 Hz
Stand-by; 0.6 W
Power on; 89 W
Width; 270 mm (10-5/8")
Height; 300 mm (11-13/16")
Depth; 351 mm (13-13/16")
6.2 kg (13.7 lbs.)
PMPO; 576 W
MPO; 144 W (72 W + 72 W)
(DIN 45 324)
RMS; 80 W (40 W + 40 W)
(DIN 45 324)
RMS; 66 W (33 W + 33 W)
(DIN 45 500)
RMS; 80 W (40 W + 40 W)
(10 % T.H.D.)
RMS; 66 W (33 W + 33 W)
(0.9 % T.H.D.)
Video/Auxiliary (audio signal);
500 mV/47 kohms
Front speakers; 6 ohms
Surround Speakers; 16 ohms
Headphones; 16-50 ohms
(recommended; 32 ohms)
3-disc multi-play compact disc
player
Non-contact, 3-beam semi-
conductor laser pickup
1-bit D/A converter
20 - 20,000 Hz
90 dB (1 kHz)
FM; 87.5 - 108 MHz
AM; 522 - 1,620 kHz
Cassette deck section
Type:
Frequency response:
Motor:
Signal/noise ratio:
Bias and erasure system: AC
Tape speed:
Wow and flutter:
(Except for UK)
Wow and flutter:
(For UK)
Heads:
CP-C621H
Front speaker section
Type:
Maximum input power:
Rated input power:
Impedance:
Dimensions:
Weight:
GBOXS0025AWM1
Surround speaker section
Type:
Maximum input power:
Rated input power:
Impedance:
Dimensions:
Weight:
Specifications for this model are subject to change without
prior notice.
– 3 –
CD-C621H
Compact cassette tape
50 - 14,000 Hz (Normal tape)
DC motor with electronic
governor x 1
55 dB (TAPE 1, playback)
50 dB (TAPE 2, recording/
playback)
4.76 cm/sec. (1-7/8 ips.)
0.2 % (DIN 45 511, playback)
0.15 % (WRMS)
TAPE-1: Playback x 1
TAPE-2: Record/Playback x 1
Erase x 1
2-way [13 cm (5-1/4") woofer
and 5 cm (2") tweeter]
60 W
30 W
6 ohms
Width; 220 mm (8-11/16")
Height; 300 mm (11-13/16")
Depth; 217 mm (8-9/16")
2.6 kg (5.7 lbs.)/each
10 cm (4") full range speaker
20 W
10 W
16 ohms
Width; 170 mm (6-3/4")
Height; 170 mm (6-3/4")
Depth; 88 mm (3-1/2")
0.4 kg (0.9 lbs.)/each

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Summary of Contents for Sharp CD-C621H

  • Page 1 CD-C621H FOR A COMPLETE DESCRIPTION OF THE OPERATION OF THIS UNIT, PLEASE REFER TO THE OPERATION MANUAL. SPECIFICATIONS CD-C621H General Cassette deck section Type: Compact cassette tape Power source: AC 230 V, 50 Hz Frequency response: 50 - 14,000 Hz (Normal tape) Power consumption: Stand-by;...
  • Page 2: Troubleshooting (Cd Section)

    CD-C621H TROUBLESHOOTING (CD SECTION) When the CD does not function When the CD section does not operate When the objective lens of the optical pickup is dirty,this section may not operate.Clean the objective lens,and check the playback operation.When this section does not operate even after the above step is taken,check the following items.
  • Page 3 CD-C621H • When the turntable fails to stop. Is from 5 V till 2.5V down pulse (approx. 300 ms) Check the SWM3 and the wiring from the IC701 pin 21 to the 2.5V SWM3. input into the IC701 pin 21 when the turntable is rotating?
  • Page 4 CD-C621H • When the CD tray fails to open or close. Check the OPEN CLOSE SW and the wiring from the IC701 Is there following voltage input in specific state of IC701 pin 19? pin 19 to the OPEN CLOSE SW.
  • Page 5 CD-C621H • Playback can only be performed when a disc is loaded. Check the laser diode driver. Is the Focus servo active? (Can you hear it working?) Check the area around IC1(16) - (21) (focus servo circuit). If the disc is not turning, the DRF Does the DRF signal change from "L"...
  • Page 6 CD-C621H • Checking the spin system. Play operation is performed without disc. The turntable rotates a little. The spin driver circuit is normal. Check the periphery of IC1 pins 23 to 27, pin 39, and pin 40, IC2 The turntable fails to rotate or rotates at high speed.
  • Page 7 CD-C621H VOLTAGE FE301 IC302 IC303 IC701 PIN VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE NO. VOLTAGE VOLTAGE 2.5V 2.5V 0V (0V) 2.6V (2.6V) 2V (2V) 4.8V 4.8V 2.5V 2.6V 4.8V 4.8V 0V (0V) 0V (0V) 5V (5V) 2.5V...
  • Page 8: Waveforms Of Cd Circuit

    CD-C621H WAVEFORMS OF CD CIRCUIT STOP PLAY FOCUS SERCH 0.5ms 0.50 V 10.0 V IC1 20 F.E 0.5ms 10.0 V 0.5ms 5.0 V 0.50 V IC1 54 DRF 0.5ms 1.00 V PLAY 0.5ms NORMAL DISC 1.00 V TN0=01 20ms 1.00 V 0.5ms...
  • Page 9 CD-C621H RECORD SIGNAL FM SIGNAL PLAYBACK SIGNAL CNS11 R-CH A_GND L-CH CD_GND R639 C601 4.7/50 +12V R607 1.5K R608 1.5K C605 R605 1.5K R606 1.5K 4.7/50 R603 1.5K R604 1.5K C603 R602 1.5K R601 1.5K 4.7/50 C611 0.033 C612 0.033...
  • Page 10 CD-C621H D SIGNAL CD SIGNAL R633 L-CH R631 C631 JK601 390P VIDEO C602 R634 C632 R632 4.7/50 R642 R608 1.5K 390P R-CH C606 C654 R606 1.5K 4.7/50 4.7/50 R604 1.5K R640 47K D601 R602 1.5K 1SS133 D602 C612 0.033 C604...
  • Page 11 CD-C621H IC901 STK4074B POWER AMP. (2Ch) C915 C923 120P 120P R912 R921 100(1/4W) C916 Fusible C911 R917 R918 100/50 R916 C912 100/50 R913 C917 100 (1/4W) Fusible 47/50 R926 0.1 (1W) D903 D906 1SS133 1SS133 C934 C921 C920 0.022 0.022...
  • Page 12 CD-C621H R960 M901 FAN MOTOR D960 R967 C961 1SS133 47/50 R963 R946 330(1/2W) HEADPHONES PWB-A5 R962 WTM801 R949 RL901 330(1/2W) L902 L970 L901 0.29µH 2.2mH 0.29µH C954 C970 C971 JK970 100/50 100P 100P HEADPHONES C956 R944 R950 R943 R945 100/50...
  • Page 13 CD-C621H DISPLAY PWB-A3 FL701 FL DISPLAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3 R721 R722...
  • Page 14 CD-C621H 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 RWC(DSP) WRQ(DSP) C706 CO IN(DSP) 1/50 SQ OUT(DSP) CQ CK(DSP) RES(DSP) C709 DRF(ASP) 0.022 D_GND C710 SLD+ 220/10 R778 SLD– R777 PUIN SW R776...
  • Page 15: Pickup Unit

    CD-C621H 47/16 0.01 2SA1318 1/50 64 63 61 60 55 54 53 52 51 50 49 – FIN2 – FIN1 EFBAL – – EREF FOSTA – DGND TOSTA – 2FREQ CNP1 0.1/50 LASER – 0.033 TE– – LA9241M FSTA 100K SERVO AMP.
  • Page 16 CD-C621H R57 1K R58 1K R59 1K CD SIGNAL R61 1K R62 1K R63 1K 0.01 64 63 60 59 58 57 56 55 54 53 52 51 50 EFLG SBSY SUB-CODE µ-COM INTERFACE DEF1 XVSS 16.934 MHz X-TAL 3.3M...
  • Page 17 CD-C621H CT26 XT21 4.332 MHz XOUT VDDD VSSD ICT21 LC72720 RT35 RDS DECORDER 220K RT36 220K SYNC RDS-ID RT37 RT26 220K CT25 560P FLOUT RT21 100K VSSA RT28 1K CT24 CT22 VDDA 0.022 0.022 RT29 1K LT21 MPXIN 2.2µH RT30 1K...
  • Page 18 CD-C621H MW LOOP SO301 ANTENNA ANTENNA 75 Ohms TERMINAL C301 CNP301 C338 X352 C394 D302 L341 D301 C381 C397 C382 C321 T302 Q301 R378 C347 C330 C341 R398 C331 C332 C337 C384 C334 Q360 R323 B C E VR351 R387...
  • Page 19 CD-C621H P33 8 - H TO DISPLAY PW P35 12 - D TO CD SERVO PWB CNS701 CNP11 FC701 CNS11 1 2 3 4 5 6 MAIN PWB-A1 COLOR TABLE BROWN R D ( R ) C605 C651 ORANGE YELLOW...
  • Page 20 CD-C621H P33 8 - H TO DISPLAY PWB CNS701 P29 12 - F FC701 TO TUNER PWB CNP303 R156 Q114 Q104 Q103 C156 Q122 B C E C136 R142 C134 R111 R170 Q105 C116 R112 C106 R118 C114 C142 C140...
  • Page 21: Display Pwb-A3

    CD-C621H COLOR TABLE SWITCH PWB-A4 RS707 SW708 LED704 LED707 LED706 LED703 LED705 C718 DISC SKIP RS704 RS706 RS703 RS712 RS705 C719 SW709 RD09 OPEN/CLOSE DISPLAY PWB-A3 SW729 EQUALIZER R727 C706 C720 FL701 D723 SW730 DIMMER C712 3 2 1 Q707...
  • Page 22 CD-C621H R D(R) WH (W) COLOR TABLE BROWN ORANGE YELLOW GREEN BLUE VIOLET GRAY WHITE BLACK PINK SW707 SW706 LED704 LED703 LED702 LED701 DISC3 DISC2 RS701 RS704 RS703 RS702 FW702 SW705 RD06 DISC1 RD05 SW704 21 20 TIMER/ SLEEP RD04...
  • Page 23 CD-C621H SWM3 P32 5 - H F. P. CNSM1 CNPM1 TO DISPLAY PWB FWM2 FWM1 PHM1 SWM4 CNPM2 F. A. S SOLM1 TAPE MECHANISM SOLENOID (254-8) PWB-F SWM5 TAPE MOTOR(254-7) TAPE MECHANISM ASSEMBLY P31 10 - E TO MAIN PWB...
  • Page 24 CD-C621H ZD61 3 2 1 CNP2 CNP10 1 2 3 4 5 6 7 8 9 10 CNP3 CD SERVO PWB-B PICKUP UNIT(306) CNS1A CNS1B CNS2A CNS2B • The numbers are waveform numbers shown in page 37. Figure 35 WIRING SIDE OF P.W.BOARD (7/7)