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19
Record Level Adjustment (Deck B)
Procedure:
INTRODUCTION
When set to the test mode performed in
Tape Speed Adjust-
ment
, 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 au-
tomatically switch to VIDEO.
(After recording, press the
m
button without stopping will re-
turn to the position where recording was started)
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, press the REC PAUSE/START button,
and then press the
N
button of deck B to start recording.
3. Mode: Record
4. Mode: Playback
5. Confirm playback the signal recorded in step 2 become adjust-
ment level as follows.
If these levels do not adjustment level, adjust the RV301 (L-CH)
and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4.
Adjustment level:
CN301 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location: MAIN board
Adjustment Location:
– AUDIO BOARD (Component Side) –
– MAIN BOARD (Conductor Side) –
AF OSC
VIDEO (AUDIO) IN
315Hz 50 mV (–23.8 dB)
Blank tape
CS-123
Set
Attenuator
600
Ω
Recorded
position
Level meter
Set
MAIN board
CN301
1
(L-CH),
CN301
3
(R-CH)
+
–
3 1
CN301
RV301
Record level (L ch)
IC301
RV351
Record level (R ch)
RV441 RV341
RV301(Lch),RV401(Rch)
Playback Level (Deck B)
RV301 RV401
RV341(Lch),RV441(Rch)
Record Bias
RV311(Lch),RV411(Rch)
Playback Level (Deck A)
RV311
RV411
Summary of Contents for HCD-ZX70DVD
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