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DECK B
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
HI-SPEED DUBBING button.
Procedure:
1. Turn the power switch on.
2. Press the
p
button, ENTER button and GROUP 3 button
simultaneously.
(The "VOLUME" on the fluorescent indicator tube will blink
while in the test mode.)
To exit from the test mode, press the
Mode: Playback
test tape
WS-48B
(3 kHz, 0 dB)
set
main board
CN301 (Pin 3 : L-CH)
1. Insert the WS-48B into the deck B.
2. Press the · button on the deck B.
3. Press the HI-SPEED DUBBING 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 HI-SPEED DUBBING button.
Then back to NORMAL speed mode.
6. Adjust RV1002 on the LEAF SW board so that frequency
counter reads 3,000 ± 90 Hz.
Adjustment Location: LEAF SW board
Sample Value of Wow and filter
W,RMS (JIS) within 0.3%
(test tape: WS-48B)
Playback level Adjustment
Procedure:
Mode: Playback
test tape
P-4-L300
(315 Hz, 0 dB)
set
main board
CN301 (Pin 3 : L-CH)
Deck A is RV311 (L-CH) and RV411 (R-CH), Deck B is RV301
(L-CH) and RV401 (R-CH) so that adjustment within adjustment
level as follows.
Adjustment Level:
CN301 PB level: 301.5 to 338.3 mV (–8.2 to –7.2 dB) level
difference between the channels: within ±0.5 dB
Adjustment Location: AUDIO board
button.
I/u
frequency counter
+
–
(Pin 1 : R-CH)
DECK A
DECK B
level meter
+
–
(Pin 1 : R-CH)
— 22 —
DECK B
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, after
selecting DECK B with the FUNCTION button, and press
≠º – button then rewind to recording start position.)
1. Press FUNCTION 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 r REC button, press P PAUSE button, then
recording start.
4. Mode: Record
MD/VIDEO (AUDIO) IN
1) 315 Hz
50 mV (–23.8 dB)
2) 10 kHz
AF OSC
600 Ω
attenuator
5. Mode: Playback
recorded
portion
set
CN301 (Pin 3 : L-CH)
6. Confirm playback the signal recorded in step 3 become
adjustable level as follows.
If these levels do not adjustable level, adjustment the RV341
(L-CH) and RV441 (R-CH) on the AUDIO board to repeat steps
4 and 5.
Adjustable level: Playback output of 315 Hz to playback
output of 10 kHz: ±1.0 dB
Adjustment Location: AUDIO board
DECK B
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, after
selecting DECK B with the FUNCTION button, and press
≠º – button then rewind to recording start position.)
1. Press FUNCTION 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 r REC button, press P PAUSE button, then
recording start.
blank tape
CN-123
set
level meter
+
–
(Pin 1 : R-CH)
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