DOWNLOAD Sony HCD-GS300AV Service Manual ↓ Size: 7.21 MB | Pages: 71 in PDF or view online for FREE

Model
HCD-GS300AV
Pages
71
Size
7.21 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-gs300av.pdf
Date

Sony HCD-GS300AV Service Manual ▷ View online

3
HCD-GS300AV
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 
0
 OR DOTTED LINE WITH
MARK 
0
 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE  TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a
passive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable.  (See Fig. A)
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER  DIODE  AND  FOCUS  SEARCH  OPERATION
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveforms is output three times.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering or
unsoldering.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 
0
 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
4
HCD-GS300AV
SECTION 1
SERVICING NOTES
CD-TEXT TEST  DISC
This unit is able to display the test data (character information)
written in the CD on its fluorescent indicator tube.
The CD-TEXT TEST DISC (TGCS-313: J-2501-126-A) is used
for checking the display.
To check, perform the following procedure.
Checking Method:
1. Press the
I/1
button to turn the power on, set the disc to the
disc table with the “test disc” label facing right, and chuck the
disc.
2. Press the 
[CD]
 button to set CD function, and press the
bB
button to
playback the disc.
3. The following will be displayed on the liquid crystal display.
Display : 1KHZ/0dB/L R
4. Pressing the 
[--       ]
 or 
[       +]
 button, select the track. The text
data of each track will be displayed.
For details of the displayed contents for each track, refer to “Table
1: CD-TEXT TEST DISC TEXT Data Contents”.
Restrictions in CD-TEXT Display
In this unit, some special characters will not be displayed properly.
These will be displayed as a space or a character resembling it.
Table 1: CD-TEXT TEST DISC TEXT Data Contents
(TRACKS No. 1 to 20: Normal Characters)
1
1kHz/0dB/L&R
2
20Hz/0dB/L&R
3
40Hz/0dB/L&R
4
100Hz/0dB/L&R
5
200Hz/0dB/L&R
6
500Hz/0dB/L&R
7
1kHz/0dB/L&R
8
5kHz/0dB/L&R
9
7kHz/0dB/L&R
10
10kHz/0dB/L&R
11
16kHz/0dB/L&R
12
18kHz/0dB/L&R
13
20kHz/0dB/L&R
14
1kHz/0dB/L&R
15
1kHz/–1dB/L&R
16
1kHz/–3dB/L&R
17
1kHz/–6dB/L&R
18
1kHz/–10dB/L&R
19
1kHz/–20dB/L&R
20
1kHz/–60dB/L&R
TRACK
No.
Displayed Contents
Note:
 Track No. 21 to 99 are not displayed.
.
>
CLEANING  OBJECTIVE  LENS  OF  OPTICAL  PICK-UP
• In cleaning the objective lens of optical pick-up, be sure the
following below.
(Figure A)
Note 1.
In cleaning the lens, do not apply an excessive force.
As the optical pick-up is vulnerable, application of excessive
force could damage the lens holder.
Note 2.
In cleaning, do not use a cleaner other than exclusive cleaning
liquid (KK-91 or isopropyl alcohol).
Note 3.
Wipe the objective lens spirally from center toward outside. (See
Figure A)
2
Remove the 
magnet assy.
1
Open the torsion holder 
(magnet) in direction of 
arrow 
A
.
A
optical pick-up
bracket (top 60) hole
3
Put a cotton bud into 
the hole on the bracket 
(top 60) and clean the 
OP lens.
5
HCD-GS300AV
SECTION 2
GENERAL
This section is extracted
from instruction manual.
ALPHABETICAL ORDER
A – O
5.1CH/VIDEO (MD) wg (35 – 37)
ALBM +/– 4 (19)
AUDIO IN L/R jacks qk (34)
CD wk (14 – 17, 19, 24)
CD SYNC 0 (24, 25)
CLEAR wa (16, 22, 39)
DISC SELECT qf
(13 – 17, 19, 24)
DISPLAY e; (22, 29, 30, 39)
Display window 2
DOLBY PRO LOGIC 6 (12, 28)
ENTER ws (15 – 17, 20 – 22, 25,
26, 32)
GAME wf (30)
GAME MIXING w; (31)
KEYBOARD INPUT jack qh
(33)
MENU wl (16, 17, 20 – 22)
MULTI ROOM 9 (28)
Main unit
P – Z
PAUSE X 5 (15, 23 – 25)
PHONES jack qg
PLAY MODE/DIRECTION wd
(14 – 17, 23 – 25)
PRESET +/– 4 (20 – 22)
PRESET EQ 8 (27)
REC z PAUSE/START 
(24, 25)
REPEAT/FM MODE 
 (15, 22)
STOP x qa (15, 23, 24, 35, 39)
SURROUND MODE 7 (27)
TAPE wh (23)
Tape deck 3
TIMER SELECT wd (26, 32, 37)
TIMER SET wd (12, 25, 32)
TUNER/BAND wj (20 – 22)
TUNING +/– 4 (20 – 22)
VIDEO IN jack ql (34)
VOLUME qj
BUTTON DESCRIPTIONS
'/1 (power) 1
m (rewind) 4
n N (play) 4
M (fast forward) 4
. (go back) 4
> (go forward) 4
Z PUSH (front cover) qd
Z PUSH (tape deck) 3
1
e;
wl
wk
wj
wh
wg
wd
wf
ws
wa
w;
ql
qk
2
345
6
7
8
9
q;
qs
qa
qd
qf
qj
qg
qh
6
HCD-GS300AV
Setting the clock
1
 Press 
'/1
 to turn on the system.
2
Press TIMER SET.
3
Press 
.
 or 
>
 repeatedly to set the
hour.
4
Press ENTER.
5
Press 
.
 or 
>
 repeatedly to set the
minute.
6
Press ENTER.
To adjust the clock
1
Press TIMER SET.
2
Press 
.
 or 
>
 repeatedly to select
“CLOCK SET”, then press ENTER.
3
Do the same procedures as step 3 to 6
above.
Notes
• The clock settings are canceled when you
disconnect the power cord or if a power failure
occurs.
• You cannot set the clock in Power Saving Mode.
ALPHABETICAL ORDER
A – O
5.1CH wg (36)
ALBM +/ALBM – qa qk (19)
BALANCE LEFT/RIGHT 2
(12)
CD wd (14 – 17, 19, 24)
CENTER +/– 4 (12)
DISC +/DISC – qs qj
(13 – 16, 19)
DISPLAY 8 (22, 29, 30)
GAME 6 (30)
GROOVE qf (26)
P – Z
PRESET EQ qd (27)
PRESET +/PRESET – q; w;
(20 – 22)
PRO LOGIC wj (12, 28)
REAR +/– 5 (12)
SLEEP 1 (31)
SURROUND qh (27)
TAPE 7 (23)
TEST TONE wf (12)
TUNER/BAND ws (20 – 22)
TUNING +/TUNING – 9 ql
(20 – 22)
VIDEO (MD) wh (35, 37)
VOL +/– qg
Remote Control
BUTTON DESCRIPTIONS
\/1 (power) 3
n N (play) wa
X (pause) wa
x (stop) wa
. (go back) w;
m (rewind) ql
M (fast forward) 9
> (go forward) q;
5
6
7
4
qs
qd
qf
8
qa
9
q;
qj
qh
qg
qk
1
2
3
ql
w;
ws
wa
wj
wg
wh
wd
wf
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Sony HCD-GS300AV Service Manual ▷ Download

  • DOWNLOAD Sony HCD-GS300AV Service Manual ↓ Size: 7.21 MB | Pages: 71 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HCD-GS300AV in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-GS300AV Audio. Information contained in Sony HCD-GS300AV Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.