DOWNLOAD Sony HCD-MG510AV / MHC-MG510AV Service Manual ↓ Size: 7.7 MB | Pages: 73 in PDF or view online for FREE

Model
HCD-MG510AV MHC-MG510AV
Pages
73
Size
7.7 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-mg510av-mhc-mg510av.pdf
Date

Sony HCD-MG510AV / MHC-MG510AV Service Manual ▷ View online

HCD-MG510AV
13
3-12. OP  BASE  ASSY
(KSM-213BFN)
3-13. CASSETTE  LID  ASSY (A) / (B)
2
sled shaft
1
Slide the lever
in the direction of arrow 
A
.
3
Remove the optical pick-up
(KSM-213BFN) in the direction
of arrow 
B
.
A
B
5
cassette lid
assy (B)
3
cassette lid
assy (A)
2
two claws
4
two claws
1
Open the cassette lid
assy (A)/(B).
HCD-MG510AV
14
3-14. MECH  DECK (TAPE)
4
cassette holder assy (A)
0
two screws
(BVTP2.6)
1
three screws
(BVTP3 
×
 10)
qs
mech deck (tape)
qa
MD bracket
2
two screws
(BVTP3 
×
 10)
9
TC board
8
screw (BVTP2.6)
6
two screws
(BVTP2.6)
7
shield plate (MD)
5
cassette
holder
assy (B)
3
15
HCD-MG510AV
SECTION  4
TEST  MODE
Ver 1.1
[MC Cold Reset]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1. Turn the power ON or set to the DEMO mode.
2. Press three buttons of 
x
[CLEAR]
, and 
[DISPLAY]
 simul-
taneously.
3. The set is reset, and becomes DEMO mode.
[Change-over the AM Tuning Interval]
• The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the
I
/1
button to turn the power ON.
2. Select the function “TUNER”, and press the 
[TUNER/BAND]
button to select the BAND “AM”.
3. Press the
I
/1
button to turn the power OFF.
4. Press the 
[ENTER]
 and
I
/1
buttons simultaneously to the tun-
ing interval is changed over.
[CD Delivery Mode and RAM Initialize]
This mode moves the optical pick-up to the position durable
to vibration, and initializes the RAM. Use this mode when return-
ing the set to the customer after repair.
Procedure:
1. Press the
I
/1
button to turn the power ON.
2. Press three buttons of 
[ENTER]
,
M
, and 
[CLEAR]
 simul-
taneously.
3. The set is turn the power off and initializes the RAM auto-
matically. A message “LOCK” is displayed on the fluorescent
indicator tube, and the CD delivery mode is set.
[LED and Fluorescent Indicator Tube All Lit, Key
Check Mode]
Procedure:
1. Press three buttons of
x
[MENU]
, and 
[DISPLAY]
 simulta-
neously.
2. LEDs and fluorescent indicator tube are all turned on.
3. Press the 
[MENU]
 button and go to the version display mode.
Press the
m
button and go to the key and jog test mode.
4. To release from these mode, press three buttons in the same
manner as step 1, or disconnect the power cord.
– Version display mode –
Press the – 
.
button to display the version .
– Key and jog test mode –
In the key check mode, the fluorescent indicator tube displays
“K 0 J0 V0”. Each time a button is pressed, “K” value in-
creases. However, once a button is pressed, it is no longer taken
into account.
“J” value increases like 1, 2, 3 ... if turn the 
[DISC ACCESS]
dial clockwise, or it decreases like 0, 9, 8 ... if turn the
[DISC ACCESS]
 dial counterclockwise.
“V” value increases like 1, 2, 3 ... if turn the 
[VOLUME]
 knob
clockwise, or it decreases like 0, 9, 8 ... if turn the 
[VOLUME]
knob counterclockwise.
[CD Service Mode]
• This mode can run the CD sled motor optionally. Use this mode,
for instance, when cleaning the optical pick-up.
Procedure:
1. Press the
I
/1
button to turn the power ON.
2. Select the function “CD”.
3. Press three buttons of 
[ENTER]
,
M
, and 
[REPEAT]
 simul-
taneously.
4. Set to the Sled Servo mode.
5. With the CD in stop status, press the
M
button to move the
optical pick-up to outside track and display “SLED OUT”, or
press the
m
button to move the optical pick-up to inside
track and display “SLED IN”.
6. To exit from this mode, perform as follows.
1) Move the optical pick-up to the most inside track.
2) Press three buttons of
x
[CLEAR]
, and 
[DISPLAY]
simultaneously. (cold reset)
Notes:
• Always move the optical pick-up to most inside track when
exiting from this mode. Otherwise, a disc will not be unloaded.
• Do not run the sled motor excessively, otherwise the gear can
be chipped.
16
HCD-MG510AV
SECTION  5
MECHANICAL ADJUSTMENTS
 TAPE MECHANISM DECK SECTION
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
pinch rollers
erase head
rubber belts
capstan
idlers
2. Demagnetize the record/playback head with a head demagne-
tizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
2.94 mN • m to 7.84 mN • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.14 mN • m to 0.59 mN • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
2.94 mN • m to 7.84 mN • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.14 mN • m to 0.59 mN • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
6.86 mN • m to 17.64 mN • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
more than 0.98 N • m
100 g or more
(3.53 oz or more)
more than 0.98 N • m
100 g or more
(3.53 oz or more)
Mode
Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Ver 1.1
SECTION  6
ELECTRICAL  ADJUSTMENTS
Precaution
1. Demagnetize the record/playback head with a head demagne-
tizer.
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 ad-
justment should be completed before performing recording
circuit adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless other-
wise specified.
8. Set to  the DOLBY NR OFF.
• Test Tape
Tape
Signal
Used for
P-4-A100
10 kHz, – 10 dB
Azimuth Adjustment
WS-48A
3 kHz, 0 dB
Tape Speed Check
0 dB = 0.775 V
DECK  SECTION
Page of 73
Display

Click on the first or last page to see other HCD-MG510AV / MHC-MG510AV service manuals if exist.