Sony TC-W421 Servicehandleiding - Pagina 19
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TC-W421
Page
Incorrect
Correct
@
Testtape
Type
Used for
P-4-A 100
P-4-L300
WS-48A
10 kHz, — 10 dB
315 Hz, 0 dB
3 kHz, 0 dB
Azimuth adjustment
PB level adjustment
Tape speed adjustment
Record Bias Adjustment
|DECK B
Starting:
REC LEVEL control: Standard Record (See page 3.)
Procedure:
1.
Mode: Record
AF OSC
>
attenuator
10 kQ0
+0O——O
O
600 Q
LINE IN
1) 315 Hz
_
D 10 whe } 24.5 mV (— 30 dB)
CS-122
not record portion
@
Test tape
P-4-L300
PB level adjustment
WS-48B
Tape speed adjustment
Record Bias Adjustment
|DECK B
Starting:
;
REC LEVEL control: Standard Record (See page 3.)
Procedure:
1.
Mode: Record
AF OSC
CS-123
-
~
blank TAPE
S
attenuator
{90 kQ
+O0—-7-0
©
Broo ots cer
Ho
600 Q
7
LINE IN
y
1) 315 Hz
_
Dio we } 50 mV (— 23.8 dB)
Record Level Adjustment
|DECK
B
Starting:
REC LEVEL control: Standard Record (See page 3.)
Procedure:
1.
Mode: Record
AF OSC
CS-122
C3
not record portion
% | attenuator
10kQ
OI
LINE IN
315 Hz, 69.1 mV (— 21 dB)
3.
Playback the signal recorded in step 1.
2.
Adjustment Limits: — 22.7 dB + 0.5 dB (53.6 — 60.2 mV)
Adjustment Location: main board (component side) (See Page 6.)
RV502
NORMAL
+) Rvro1
& RV102
PLAYBACK
LEVEL
PLAYBACK
L
6
(DECK A)
(DECK B)
Confirm
that signal level is within
the adjustment
limits
below.
If
necessary, adjust RV141 (L-ch) and RV241 (R-ch) and repeat the step 1 —
&
RV201
&
RV202
9-957-040-91
Sony Corporation
Audio Group
—?2—
Record Level Adjustment
|DECK
B
Starting:
REC LEVEL control: Standard Record (See page 3.)
Procedure:
1.
Mode: Record
CS-123
blank TAPE
AF OSC
C3
attenuato
a
|
"
r 10kQ
LINE IN
315 Hz, 50 mV ( — 23.8 dB)
3.
Playback the signal recorded in step 1.
Confirm
that signal level
is within
the adjustment
limits
below.
If
necessary, adjust RV141 (L-ch) and RV241 (R-ch) and repeat the step 1 —
2.
Adjustment Limits: — 23.8 dB + 0.5 dB (47.2 — 53.0 mV)
Adjustment Location: main board (component side) (See Page 6.)
RV502
TAPE SPEED
NORMAL
& Avior
6) RV102
PLAYBACK
ee
Pa
(DECK A)
DECK B
CNS505
—_
| OEE
2
GD Aveor
ES aveoe
English
92E0542-1
Printed in Japan
© 1992.5
Published by Customer Relations and Service Group