Sanyo GCD 2700 - CD CHANGER MOVEMENT ILLUSTRATION; CD Changer Operation; Major Parts Identification

.-
V
‘APE DECK ADJUSTMENTS
. Make the following adjustments after first cleaning the head assembly and checking the adjustment of
the head azimuth.
f
w
47K 47K
PARTS LOCATION
DECK I?C.B
o
(J
BIAS
SVR504 SVR604
(’-CH); (R-CH)
o
!DQ
REC I PLAY GAIN
SVR603 SVR503
(F?-CH) (L-CH)
1
I
I
Adjustment Item Test tape
DOLBY Meeeurlrrg
Input
output
Adjustment
Adjustment
NR SW. Instrument connection
connection
location
value
TCC-130
(TAPE”A”) SVFM02,
‘a) :?$&@’Jt [DOLBY
OFF
AC-voltmeter
TAPE OUT
SVR602
(CNO06)
(TAPE%”) SVR501,
540mV
TAPE)
SVR601
lb) Recording/
plsybeck
AC-224
OFF
AC-voltmeter VIDEO SVR503,
gain
(NORMAL)
AF-oscillator – 14dB, lkHz
SVR603
O * ldB
adjustment
-.
., .
.- —— ..-
-.. .
k) Recording/
AC-224
AC-voltmeter VIDEO
O * IdBat
playback
(NORMAL)
OFF
SVR504.
AF-oscillator –34dB, 1kHz, 10kHz
lkHz and
frequency
SVR604
10kHz
response
edjuatment
[ ) AMPLIFIER ADJUSTMENTS 5.
A)
1.
2.
B)
1.
2.
3.
4.
Playback output adjustment
TAPE “ A n
- ..
Play the test tape and adjust SVR502 (L-channel)
and SVR602 (R-channel) so that playback output
becomes 540 mV.
TAPE “ B “
Play the test tape and adjust SVR501 (L-channel)
and SVR601 (R-channel) so that playback output
becomes 540 mV.
Recording/playback frequency gain adjustment.
DOLBY NR switch : OFF
Input signal :
– 14dB, 1
kHz.
Tape to be used :
NORMAL (AC-224, etc.)
Introduce input signals to the VIDEO terminals,
and, with the unit in the REC. PAUSE mode, ad-
just input level for 3dB out,
Record the input signal.
Press the REWIND button and rewind the tape to
the beginning of the recording just made.
Press the PLAY button.
6.
c)
1.
a)
b)
c)
d)
e)
f)
-11–
Adjust SVR503 (L-channel) and SVR603 (R- chan-
-..’...
.,
net) so that the recording and playback output lev-
el differences become * 1dB.
,’ .:...-
‘........
Repeat steps (1) to
Recording/playback
ment. “
DOLBY NR switch
NORMAL TAPE
Tape to be used :
Input signal :
(5).
frequency response adjust-
: OFF
NOFWIAL (AC-224)
-34dB, 1kHz, 10 kHz
.. . ..
introduce input signals to the VIDEO terminals.
With the unit in the REC. mode.
Record these input signals {1 kHz_
10kHz
— 1kt-fz
—lokJ-tz).
Press the REWIND button and rewind the tape to
the beginning of the recorchg just made.
Press the PLAY button.
Adjust SVR504 (L- cttarwwl) and SVR604 (R-
channel) so that the 10 ki-tz and 1 kHz output Iev- . “
.
el differences become * 1dB.
Repeat steps (a) to (e).