HCD-GRX5, HCD-RX66, MHC-GRX5, MHC-RX66 - Sony Audio Service Manual (repair manual). Page 15

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4. Mode:  Record

5. Mode:  Playback

6. Confirm playback the signal recorded in step 3 become ad-

justable 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

attenuator

set

MD/VIDEO (AUDIO) IN

1) 315 Hz
2) 10 kHz

50 mV (–23.8 dB)







600 

Ω

blank tape
CN-123

AF OSC

+
–

set

recorded
portion

CN301 (Pin 

3

: L-CH)

(Pin 

1

: R-CH)

level meter

4. Mode:  Record

5. Mode:  Playback

6. Confirm playback the signal recorded in step 3 become ad-

justable level as follows.
If these levels do not adjustable level, adjustment the RV301
(L-CH) and RV351 (R-CH) on the MAIN board to repeat steps
4 and 5.

Adjustable level:
CN301 PB level:  47.2 to 53.0 mV (–24.3 to –23.3 dB)
Adjustment Location:  MAIN board

[MAIN  BOARD] (Component Side)

[AUDIO  BOARD]  (Component Side)

[LEAF  SW  BOARD]  (Component Side)

+
–

set

recorded
portion

CN301 (Pin 

3

: L-CH)

(Pin 

1

: R-CH)

level meter

set

MD/VIDEO (AUDIO) IN
315 Hz, 50 mV (–23.8 dB)

blank tape
CS-123

600 

Ω

attenuator

AF OSC

REC LEVEL

1

3

RV301

L

RV351

R

CN106

CN301

CN107

















RV401

RV301

RV341

RV311

RV411

IC602

CN601

L

R

R L





 





 

RV441

PB LEVEL

– DECK B –

REC BIAS

L

R





 

PB LEVEL

– DECK A –

TAPE SPEED

RV1002

RV1001

(NORMAL)  (HIGH)

CN1001





















r

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 au-
tomatically switch to VIDEO.
(If do not operation of stopped from recording complete, and press

– 

0 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 

[    REC]

 button, press

P button, then recording

start.

r

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 au-
tomatically switch to VIDEO.
(If do not operation of stopped from recording complete, and press

– 

0 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 

[    REC]

 button, press

P button, then recording

start.