Sony HCD-DP1000D Service Manual page 19

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Tape Speed Adjustment
Note: Start the Tape Speed adjustment as below after setting to the test
mode.
In the test mode, the tape speed is high during pressing the
CD SYNC HI-DUB
Procedure:
1. Turn the power switch on.
2. Press the x button, DISPLAY button and DISC 3 button
simultaneously.
(Cursor segment flash on the FL display tube.)
To exit from the test mode, press the ?/1 button.
Mode: Playback
test tape
WS-48B
(3 kHz, 0 dB)
1. Insert the WS-48B into the deck B.
2. Press the Y button on the deck B.
3. Press the CD SYNC HI-DUB button in playback mode.
Then at HIGH speed mode.
4. Adjust RV1001 on the LEAF SW board do that frequency
counter reads 6,000 ± 180 Hz.
5. Press the CD SYNC HI-DUB button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
TE
L 13942296513 counter reads 3,000 ± 90 Hz.
Adjustment Location: LEAF SW board
Playback level Adjustment
Procedure:
Mode: Playback
test tape
P-4-L300
(315 Hz, 0 dB)
Deck A is RV302 (L-CH), Deck B is RV303 (L-CH) so that
adjustment within adjustment level as follows.
Adjustment Level:
CN301 PB level: 334 to 375 mV (–6.8 dB ± 0.5 dB) level
difference between the channels: within ±0.5 dB
Adjustment Location: MAIN board
Sample Volue of Wow and Flutter: 0.3% or less W. RMS
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DECK B
button.
frequency counter
+
set
–
main board
CN301 (Pin 3 : L-CH)
(Pin 1 : R-CH)
DECK A DECK B
level meter
+
set
–
main board
CN301 (Pin 3 : L-CH)
(Pin 1 : R-CH)
(WS-48B)
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y
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8
REC Bias Adjustment
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the "REC memory mode"
which rewinds only the recorded portion and playback is set.
This "REC memory mode" is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotette
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to select VIDEO. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
4. Mode: Record
AF OSC
5. Mode: Playback
Q Q
3 6 7 1 3
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV304
(L-CH) and RV354 (R-CH) on the AUDIO board to repeat steps
4 and 5.
Adjustable level: Playback output of 315 Hz to playback output
Adjustment Location: MAIN board
REC Level Adjustment
Procedure:
INTRODUCTION
When set to the test mode performed in Tape Speed Adjustment,
when the tape is rewound after recording, the "REC memory mode"
which rewinds only the recorded portion and playback is set.
This "REC memory mode" is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotate
of shuttle knob then rewind to recording start position.)
1. Press MD (VIDEO) button to select VIDEO. (This step is not
u163
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
.
3. After press REC PAUSE/START button, press REC PAUSE/
START button, then recording start.
HCD-DP1000D
2 9 9 4 2 8
DECK B
MD/VIDEO (AUDIO) IN

1) 315 Hz

50 mV (–23.8 dB)
2) 10 kHz

600 Ω
attenuator
set
1 5 0 5 8 2 9 9 4
recorded
level meter
portion
set
CN301 (Pin 3 : L-CH)
(Pin 1 : R-CH)
of 10 kHz: 0±0.5 dB
DECK B
m
co
9 9
blank tape
CN-123
2 8 9 9
+
–
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