18
HCD-DP700
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Tape Speed Adjustment
DECK B
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
button.
Procedure:
1. Turn the power switch on.
2. Press the
x
button, ENTER button and DISC 3 button
simultaneously.
(The “TEST MODE” on the fluorescent indicator tube display
while in the test mode.)
To exit from the test mode, press the
?
/
1
button.
Mode: Playback
1. Insert the WS-48B into the deck B.
2. Press the
gG
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 ± 30 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
counter reads 3,000 ± 15 Hz.
Adjustment Location: LEAF SW board
Playback level Adjustment
DECK A DECK B
Procedure:
Mode: Playback
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: 334.4 to 748.7 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
(WS-48B)
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak
R-CH
peak
within
1dB
Screw
position
R-CH
peak
MAIN
board
CN301
set
test tape
P-4-A100
(10 kHz, –10 dB)
pin
1
oscilloscope
L-CH
R-CH
V
H
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
pin
2
pin
3
L
R
+
–
set
test tape
WS-48B
(3 kHz, 0 dB)
main board
CN301 (Pin
3
: L-CH)
(Pin
1
: R-CH)
frequency counter
+
–
set
test tape
P-4-L300
(315 Hz, 0 dB)
main board
CN301 (Pin
3
: L-CH)
(Pin
1
: R-CH)
level meter
forward
reverse
Содержание HCD-DP700
Страница 37: ...37 37 HCD DP700 6 15 SCHEMATIC DIAGRAM FRONT AMP SECTION AEP US CND model Page 50 Page 30 Page 30 ...
Страница 39: ...39 39 HCD DP700 6 17 SCHEMATIC DIAGRAM FRONT AMP SECTION E51 MX model Page 50 Page 30 Page 30 Page 40 ...
Страница 40: ...HCD DP700 40 40 6 18 SCHEMATIC DIAGRAM SURROUND AMP SECTION Page 30 Page 39 Page 50 ...
Страница 44: ...HCD DP700 44 44 6 22 SCHEMATIC DIAGRAM PANEL 2 2 SECTION Page 43 Page 43 ...
Страница 46: ...HCD DP700 46 46 6 24 SCHEMATIC DIAGRAM LEAF SW SECTION Page 29 ...
Страница 48: ...HCD DP700 48 48 6 26 SCHEMATIC DIAGRAM DRIVER SECTION See page 61 for IC Block Diagrams Page 29 ...