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Service Technical Information
MODEL NO.

CSD- MD5
SUBJECT

Sound Distortion

REF.No. :G - A0 - 033 - E0 DATE :30. AUG. 2000

Please take the following countermeasure when there is a complaint such as "the sound gets distorted", or "noise is reproduced", etc., when the sound volume control level is 20 or more (maximum 30). This occurs when a CD or an MD with a high recording level of the low frequency range is played back under the following conditions: T-BASS G-EQ VOLUME - - - MAX ROCK or JAZZ 20 or more

Connect a wire between the pins 10, 13 (GND) of the POWER IC (IC200: LA4663) and the GND terminal of the capacitor C109 (1000 µF/16V) in the main P.W.B.

P.W.B-MAIN
IC200 C107 470/25
R MUTE

SP1 R211 1K POW ER AM P IC200 LA4663

+

+
SP2 (SPEAKER )

+
C216 4 .7/50

R214 C 218 4 .7K 2200p R212 4 .7K R

R211

+ 1/50
R220 0

R216 1K

5 6

7

8
Vcc

SATND BY Vcc MUTE L-CH

+
R200 180 C 200 22 /50

MUTE

+ 14
GND

+

2 + + 3

13 12

GND POW ER IC R -CH R GND

+ 9 10 11

R201 180

C201 22/50

+

4

-

Add-Wire
IC101

C217 4 .7/50

+
R215 4 .7K

R213 4.7K C 219 2200p

C212 1 /50

1 +
C210 47 /25

+

Q100-103 REG . Q 100 2SB1375

D100 GBU4D L-6419 C101 0 .022

! F101 125V 2A S1 C100 0 .022

2
R104

1 3
C107 470/25

Q 101 DTA114YK R

S1 S2

+
C 103 0 .022 C102 0.022

+

Q 103 2SC 1815Y R103 680 R102 10K

S2 S4 S4 S3

C109 1000 /16

+

R Q102 DTC114YK

C104 6800/25

Add W ire

S3 CN101

MAIN P.W.B Pattern Surface Circuit diagram

Ref. - G - R -

Parts Code 87-610-063- 310 Code No. -

Description B0 -6- 3 Access Code - Modified Ser. No. -

Remarks - Parts Schedule -