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Model
HCD-DX60AV HCD-RG70AV MHC-DX60AV MHC-RG70AV
Pages
73
Size
5.62 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-dx60av-hcd-rg70av-mhc-dx60av-mhc-rg70av.pdf
Date

Sony HCD-DX60AV / HCD-RG70AV / MHC-DX60AV / MHC-RG70AV Service Manual ▷ View online

16
HCD-DX60AV/RG70AV
[Aging Mode]
This mode can be used for operation check of CD section and tape deck section.
• If an error occurred:
The aging operation stops and display status.
• If no error occurs:
The aging operation continues repeatedly.
1.
Operating method of Aging Mode
Turn on the main power and select “CD” of the function.
1) Set a disc in DISC1 tray.  Select ALL DISC CONTINUE, and REPEAT OFF.
2) Load the tapes recording use into the decks A and B respectively.
3) Press three buttons
x
ENTER
,  and
DISC SKIP/EX-CHANGE
simultaneously.
4) Aging operations of CD and tape are started at the same time.
5) To exit the aging mode, perform [MC Cold Reset].
3. Aging Mode in CD section
1) Display state
• No error occurs
Note:
[*][*][*][*] :  Number of aging operations
Error display
E
** s ## $$ %%
1 2 3 4 5
• When the buttons
x
ENTER
and
DISC 1
are pressed simultaneously, number of time of the mechanism error and the NO DISC
error can be checked.
Display:
EMC**EDC**
**:
Number of times of error (Maximum three times)
EMC: Mechanism error
EDC: NO DISC error
• When aging operation is complete, be sure to perform the MC Cold Reset to reset the error history.
D: No disc error
01: FOCUS ERROR
02: GFS ERROR
03: SETUP ERROR
01: NO DISC judgment without chucking retry
02: NO DISC judgment after chucking retry
Status at the time of NO DISC judgment
(High order digits only)
1:
STOP
2:
SETUP
3:
TOC READ
4:
ACCESS
5:
PLAY BACK
6:
PAUSE
7:
MANUAL SEARCH (PLAY)
8:
MANUAL SEARCH (PAUSE)
AGING
[*][*][*][*]
1
 
**
2
 s
3
 
##
4
 
$$
5
 
%%
M: Mechanism error
Don’t care
High order digits only
D: Stopped during closing due to problems other than mechanism.
E: Stopped during opening due to problems other than mechanism.
C: Stopped during chucking due to problems other than mechanism.
F: Stopped during EX-opening due to problems other than mechanism.
Emergency related errors (High order digits only)
1:
Stopped during chuck-up
2:
Stopped during chuck-down
3:
Time out by EX-OPEN
5:
Time out by EX-CLOSE
The error No. 00 indicates the newest error.  As the error No. increases, it means the older error.
When you want to retrieve the error history, press the
PLAY MODE
button in the case of mechanism error.
Or press the
REPEAT
button in the case of NO DISC error.
Display
17
HCD-DX60AV/RG70AV
2)  Operation during aging mode
In the aging mode, the program is executed in the following
sequence.
(1)
The disc tray opens and closes.
(2)
The mechanism accesses DISC 2 and makes an attempt to
read TOC.  However, since there are no discs, a message
“CD2 NO DISC” appears.
(3)
The mechanism accesses DISC 3 and a message “CD3 NO
DISC” appears.
(4)
The disc tray turns to select a disc1.
(5)
A disc is chucked.
(6)
TOC of disc is read.
(7)
The pickup accesses to the track 1, and  playing 2 seconds.
(8)
The pickup accesses to the last track, and playing 2 seconds.
(9)
Every time when an aging operation of step 1 to step 8 is
complete, the display “AGING[*][*][*][*]” value increases
as the number of aging operations is counted up.
(10) Returns to step 1.
3. Aging Mode in Tape Deck section
1) Display state
• No error occurs
Display action now
• Error occurred
Display action last time
2)  Operation during aging mode
In the aging mode, the program is executed in the following
sequence.
(1) Rewind is executed up to the top of tape A and B.
(2) A tape on FWD side is played for 2 minutes.
(3) FF is executed up to either made for 20 second or the end of
tape.
(4) A tape is reversed, and the tape on REV side is played for 2
minutes.
Note
* REV side of both Tape A and Tape B are played.
(5) Rewind is executed up to the top of tape.
(6) Returns to step 2, and repeat steps from 2 to 5.
[Function Change Mode]
* elect either VIDEO or MD of the external FUNCTION input.
Procedure:
1.
Turn on the power.
2.
Press the two buttons
MD (VIDEO)
and
I/1
at the same time.
The main power is turned on and the other function of the
previous function is selected and displayed.  “MD” or
“VIDEO”.
NO. Display action
Action contents
Final timing
1
TAPE A AG-6
Rewind the TAPE A
The top of tape
TAPE B AG-1
Rewind the TAPE B
2
TAPE A AG-2
FWD play the TAPE A
2 minutes playing
3
TAPE A AG-3
F.F. the TAPE A
20 second FF or the end
of tape
4
TAPE A AG-4
REV play the TAPE A
2 minutes playing
5
TAPE A AG-5
Rewind the TAPE A
The top of tape
6
TAPE B AG-2
FWD play the TAPE B
2 minutes playing
7
TAPE B AG-3
F.F. the TAPE B
20 second FF or the end
of tape
8
TAPE B AG-4
REV play the TAPE B
2 minutes playing
9
TAPE B AG-5
Rewind the TAPE B
The top of tape
18
HCD-DX60AV/RG70AV
SECTION  4
ELECTRICAL  ADJUSTMENTS
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. Repeat step 1 to 3 in playback (REV) mode.
5. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak
R-CH
peak
within
1dB
Screw
position
R-CH
peak
set
test tape
P-4-A100
(10 kHz, –10 dB)
L-CH
R-CH
waveform of oscilloscope
in phase 45
°
90
°
135
°
180
°
good
wrong
PANEL board
PHONES jack (JACK701)
oscilloscope
V
H
+ +
32 
32 
0 dB=0.775 V
DECK  SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual.  (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
• Test Tape
Record/Playback Head Azimuth Adjustment
Note:
  Perform this adjustments for both decks
Procedure:
1. Mode:  Playback
DECK A      DECK B
set
test tape
P-4-A100
(10 kHz, –10 dB)
level meter
PANEL board
PHONES jack (JACK701)
32 
+
Tape
Signal
Used for
P-4-A100
10 kHz, –10 dB
Azimuth Adjustment
WS-48B
3 kHz, 0 dB
Tape Speed Adjustment
forward
reverse
19
HCD-DX60AV/RG70AV
Tape Speed Adjustment
DECK B
Note:
Start the Tape Speed adjustment as below after setting to the test
mode.
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
I/1
button.
Mode:  Playback
1. Insert the WS-48B into the deck A and the blank tape into the
deck B.
2. Press the
REC PAUSE/START
button on the deck B. Then the
deck B is at recording mode.
3. Set the deck A to playback mode.
4. Adjust SFR401 on the MAIN board so that frequency counter
reads 3,000 
±
 15 Hz.
5. Frequency difference between deck A and deck B the beginning
of the tape should be within 
±
1.5 %.
Adjustment Location:
set
test tape
WS-48B 
(3 kHz, 0 dB)
frequency counter
PANEL board
PHONES jack (JACK701)
+
32 
TUNER  SECTION
FM Tuned Level Adjustment
Procedure:
1.
Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2.
Tune the set to 98 MHz.
3.
Adjust SFR101 to the point (moment) when the TUNED
indicator will change from going off to going on.
Adjustment Location: MAIN board
Null Adjustment
Procedure:
1.
Supply a 60 dB 98 MHz signal from the ANTENNA terminal.
2.
Tune the set to 98 MHz.
3.
Measure voltage between pin wa of IC101.  Adjust T101 ubtil
the voltage becomes 0 V.
Adjustment Location: MAIN board
Adjustment Location
FM RF SSG
75 
 coaxial
Carrier frequency : 98 MHz
Modulation           : AUDIO 1 kHz, 75 kHz
                              deviation (100%)
Output level          : 28 dB  (at 75 W open)
FM ANTENNA terminal
(JK101)
set
FM RF SSG
75 
 coaxial
Carrier frequency : 98 MHz
Modulation           : AUDIO 1 kHz, 75 kHz
                              deviation (100%)
Output level          : 60 dB  (at 75 W open)
FM ANTENNA terminal
(JK101)
set
[MAIN BOARD] (Component side)
CN406
SFR401
TAPE SPEED
[MAIN BOARD] (Component side)
SRF101
FE101 or FE102
FM TUNED LEVEL
NULL
T101
IC101
Sample Value of Wow and Flutter: 0.3% or less W. RMS
(WS-48B)
Page of 73
Display

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