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JVC CA-MXG9BK Service Manual page 73

Compact component system
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TD-MXG9BK
. Input a 1 kHz( -—8.20Bs: 300mV) signal to
VIDEO/AUX terminal
d
it on the left | Lb: ¥R185
~§.5dBs
Adjust with normal tape and
elie
Bre
Teor
make sure that the left/right
R: VR186
{411mV)
§ level difference is 1.0dB or iess
and right channels .
. Connect an electronic voltmeter to the DOLBY
TP (figure 3} to confirm the recorded values.
. If the values are not satisfied , adjust the ©
semi-fixed resistors and record the signals
-
again to confirm the values.
. Record a music source using the CrO, tape.
. Rewind and erase the recorded section.
. Comfirm nothing can be heard.
. Make sure to operate AUTO STOP at the end
of tape running and not to operate on the
way ofthe playing.
. Make sure not to work the music scanning
operation at thé start of tape wind using
TMT-6237.
~
. Make sure to work ti-e music scanning
operation at the end of tape wind using TMT-
6247.
.
. Make sure to work the blunk Ecuip operation
at the tape wind using TMT- "6447.
oO} vR451 (LOW)
R452 (HIGH)
s
TAPE
SPEED
<==
Mechanism controller(ENJ-O67-2)
Playback Freq. respose(B)
VR114 (R)
R113 (L)
a
gq
Playback Freq. respose(A)
=
Bias ADJ
L351
Bias
test point,
e—e
Recording level ADJ
ea
co
a
Gy
Playback_levei(8) WiBeme
L-
oO
yy
¥
Playback level(A)
alia as
es
vrna2 i m ) vRIAI(L
a]
nr
:
VR112 (A)
VR117 (LD
Dolby
ore
HX PRO
' test t pointe —E wad
Test point
ee
it
wid
R308
302k) FAY AA
OR
&
W147 @—@
F
q 8307
wor) Key] "We
WB ome Et
Recording / Playback
.
ENJ -O67-1
Freq.response
;
Figure 3
(No. 20437)1-11

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