Sony HCD-MDX10 Service Manual - Page 38

Record Level Adjustment, Deck B, Tape Speed Adjust, MAIN BOARD], Procedure, INTRODUCTION

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Record Level Adjustment (Deck B) 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. (After recording, press the - 0 button without stopping will return to the position where recording was started.) 1. Press FUNCTION button to select VIDEO 1. (This step is not necessary if the above test mode has already been set.) 2. Insert a tape into deck B, press the r REC button, and then press the ( button to start recording. 3. Mode: Record VIDEO (AUDIO) IN 315Hz 50 mV (-23.8 dB) AF OSC 600 Ω attenuator blank tape CS-123 set 4. Mode: Playback recorded position level meter set VIDEO (AUDIO) OUT 5. Confirm playback the signal recorded in step 2 become adjustment level as follows. If these levels do not adjustment level, adjust the RV301 (LCH) and RV351 (R-CH) on the MAIN board to repeat steps 3 and 4. Adjustment level: CN403 playback level: 47.2 to 53.0 mV (-24.3 to -23.3 dB) Adjustment Location: MAIN board [MAIN BOARD] (Conductor Side) Record Level (L CH) RV301 43 42 56 29 1 14 28 15 IC301 CN303 RV351 Record Level (R CH) - 38 -

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– 38 –
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 ad-
justment. During recording, the input signal FUNCTION will auto-
matically switch to VIDEO.
(After recording, press the
–
0
button without stopping will
return to the position where recording was started.)
1. Press
FUNCTION
button to select VIDEO 1. (This step is not
necessary if the above test mode has already been set.)
2. Insert a tape into deck B, press the
r
REC
button, and then
press the
(
button 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:
CN403 playback level: 47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location:
MAIN board
[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
VIDEO (AUDIO) OUT
IC301
Record Level (L CH)
RV301
CN303
RV351
Record Level (R CH)
56
43 42
29
28
15
14
1