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Kenwood KX-W8040 Service Manual page 14

Stereo double cassette deck
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KX-W8040
14
INPUT
OUTPUT
CASSETTE TAPE
ALIGNMENT
ITEM
SETTINGS
SETTINGS
DECK SETTINGS
POINTS
ALIGN FOR
CASSETTE DECK SECTION
TAPE: NORMAL,
DOLBY: OFF,
INPUT: LINE
OdBs =0.775V
1 REC/PLAY HEAD
POWER: OFF
Demagnetize the REC/PLAY
C1) | DEMAGNETIZATION
Remove the
REC/PLAY
head with a head
cassette door.
head
demagnetizer.
REC/PLAY
Clean the REC/PLAY head
head
erase head,
capstan
and
CLEANING
erase
head,
Pinch roller
using a cotto
capstan,
swab slightly
daaped
pinch roller.
with alcohol.
MTT-114, TCC-153
Azimuth
SCC-1727
10kHz, -10dB
AZIMUTH
adjustment
screw
Maximum
output.
1 PC BOARD (X28-—231)
Adjust
the tape speed so
MTT-111, TCC-110
DECK A:
;
:
TAPE SPEED
SCC-1727
DECK B:
that
a 6kHz signal
is
(HL SPEED)
3kHz
Test mode test
YR1 (VR103) on each
Produced
at the center
-4dB
FF key
HI speed
own mechanism board
of the tape,
F. PLAY key
;
MTT-111, TCC-110
Normal speed | DECK A:
Adjust the tape speed so
TAPE SPEED
SCC-1727
DECK B:
that a 3kHz signal
is
CRORMAL)
3kHz
VR2 (VR223) on each
produced
at the center
-4dB
own mechanism board
of the tape.
Connect a DC
DECK A: VR9
Adjust
the semi-fixed
voltmeter to
DECK B: VR10
resistanceso that
TPS and GND (A)
TP6 and GND (B)
ene
Output level: -3.0dBs
Use the leader
section of
the test
tape.
MTT-150
400H2(200n¥b)
QUICK REVERSE
SENSITIVITY
M PC BOARD (X28-231 )
DECK A:VRIL)
2-3,
PLAYBACK
MTT-256, SCC-1727
VRAR)
<I>
LEVEL
315Hz (160nWb)
(B)
PLAY
DECK B:VRRXL)
NTT-256U, TCC-160
VRARI
SCC-1176
Output level: -2.0dBs
315H2(220n¥b)
Adjust REC level
volume so that
the REC monitor
output
becomes
«29dBs
at LkHz,
then record and
reproduce signal
of IkHz-and
10kHz
in alaternation.
Record
IkHz and 10kHz
in
alternation
and adjust
the
variable
resistors
which
DECK A:VRO(L)
VRGIR}
DECK B:VR7{L)
VR8IR)
(A)
IkHz, ~30dBs
10kHz, -30dBs
BIAS CURRENT
control
the bias
current
so that
the same playback
level
is obtained.
onnect
the frequency
Load the
counter
between
BIAS OSCILLATING
non recorded
TPL and GND
DECK A:L3
Adjust
so that
the
FREQUENCY
tapes on Deck
on Deck A, between
DECK BL 4
frequency
counter
A and B.
TP2 and GND
shows
1LQ5kHz.
on Deck B.
Load a
Load a aetal tape,
DECK A:L5(L)
<4
BIAS LEAK
non recorded
and dub in a
ue
Mininua (Point)
DECK
B:L7(L)
tape on Deck A
high speed mode.
L8(R)

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