HCD-DX90
REC Bias Adjustment DECK B4. Mode: Record
Procedure:
INTRODUCTIONMD/VIDEO (AUDIO) IN
When set to the test mode perforTape Speed Adjustmentmed in ,315 Hz, 50 mV (�23.8 dB)
AF OSC
when the tape is rewound after rOREC memory modeecording, the �blank tape
which rewinds only the recorded portion and playback is set.600 &CS-123
This OREC memory mode� is convenient for performing thisattenuator
adjustment. During recording, the input signal FUNCTION will
set
automatically switch to VIDEO.
(If do not operation of stopped from recording complete, and rotette
of shuttle knob then rewind to recording start position.)5. Mode: Playback
recorded
1. Press MD/VIDEO button to select VIDEO. (This step is notlevel meter
portion
necessary if the above test mode has already been set.)
2. Insert a tape into deck B.
+
set
3. After press REC PAUSE/START button, press REC PAUSE/�
START button, then recording start.
4. Mode: RecordCN301 (Pin 3 : L-CH)
(Pin 1 : R-CH)
6. Confirm playback the signal recorded in step 3 become
MD/VIDEO (AUDIO) INadjustable level as follows.
1) 315 HzIf these levels do not adjustable level, adjustment the RV301ü
ý 50 mV (�23.8 dB)
2) 10 kHzţ(L-CH) and RV351 (R-CH) on the MAIN board to repeat steps
AF OSC
blank tape4 and 5.
600 &CN-123Adjustable level:
attenuator
CN301 PB level: 47.2 to 53.0 mV (�24.3 to �23.3 dB)
setAdjustment Location: MAIN board
5. Mode: Playback[MAIN BOARD] (Component Side)
recorded
level meter
portion
+
setT601
�
REC LEVEL (L)
CN301 (Pin 3 : L-CH)RV611(B)PB LEVEL (R)
(Pin 1 : R-CH)(A)
CN304
6. Confirm playback the signal recorded in step 3 becomeCN301
PB LEVEL (L)
adjustable level as follows.3 1RV301
(A)
If these levels do not adjustable level, adjustment the RV304RV352
PB LEVEL (R)
(L-CH) and RV354 (R-CH) on the AUDIO board to repeat stepsRV302(B)CN302
RV353
4 and 5.RV303
RV351
Adjustable lePlayback output of 315 Hz to playback outputvel:CN303
REC LEVEL (R)PB LEVEL (L)
of 10 kHz: ?1.0 dB(B)
(B)RV304
Adjustment Location: MAIN boardREC LEVEL (L)
(A)REC LEVEL (R)RV354
REC Level Adjustment DECK B(A)
Procedure:
INTRODUCTION
[LEAF SW BOARD] (Component Side)
When set to the test mode perforTape Speed Adjustmentmed in ,
TAPE SPEED
when the tape is rewound after rOREC memory modeecording, the �ţ ô ô ô ô ý ô ô ô ü
which rewinds only the recorded portion and playbac(NORMAL) (HIGH)k is set.
This OREC memory mode� is convenient for performing this
adjustment. During recording, the input signal FUNCTION will
RV1002 RV1001CN1001
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
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.
18 |
ACEC
SONY
