HCD-RG555, MHC-RG555 - Sony Audio Service Manual (repair manual)

hcd-rg555, mhc-rg555 service manual
Model
HCD-RG555 MHC-RG555
Pages
70
Size
6.29 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-rg555-mhc-rg555.pdf
Date

Read Sony HCD-RG555 / MHC-RG555 Service Manual online

1
Ver 1.1  2008.12
CD
Model Name Using Similar Mechanism
NEW
Section
CD Mechanism Type
CDM74-F1BD81
Optical Pick-up Name
KSM-215DCP/C2NP
Tape Deck
Model Name Using Similar Machanism
NEW
Section
Tape Transport Mechanism Type
CWM43RR-35
SERVICE MANUAL
E Model
HCD-RG555
Amplifier section
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated): 120 + 120 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
150 + 150 watts (6 ohms at
1 kHz, 10% THD)
Inputs
VIDEO/MD IN (phono jack):
voltage 450/250 mV,
impedance 47 kilohms
GAME INPUT AUDIO L/R (phono jacks):
voltage 250 mV,
impedance 47 kilohms
GAME INPUT VIDEO (phono jack):
1 Vp-p, 75 ohms
MIC (phone jack):
sensitivity 1 mV,
impedance 10 kilohms
Outputs
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
VIDEO OUT (phono jack): max. output level
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
SPEAKER:
accepts impedance of 6 to
16 ohms
SPECIFICATIONS
CD player section
System
Compact disc and digital
audio system
Laser
Semiconductor laser
(
λ=770 – 810 nm)
Emission duration:
continuous
Frequency response
2 Hz – 20 kHz (
±
0.5 dB)
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Tape deck section
Recording system
4-track 2-channel, stereo
Frequency response
50 – 13,000 Hz (
±
3 dB),
using Sony TYPE I
cassettes
Tuner section
FM stereo, FM/AM superheterodyne tuner
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
9-877-774-02
2008L04-1
© 2008.12
– Continued on next page –
MINI HI-FI COMPONENT SYSTEM
• HCD-RG555 is the tuner, deck,
CD and amplifier section in
MHC-RG555.
2
HCD-RG555
FM tuner section
Tuning range
87.5 – 108.0 MHz (50 kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Saudi Arabian model:
531 – 1,602 kHz (with the tuning
interval set at 9 kHz)
Other models:
530 – 1,710 kHz (with the tuning
interval set at 10 kHz)
531 – 1,602 kHz (with the tuning
interval set at 9 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
Saudi Arabian model:
120 – 127 V/220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Other models:
120 V, 220 V or 230 –
240 V AC, 50/60 Hz
Adjustable with voltage
selector
Power consumption
155 watts
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Approx. 280 
×
 327 
×
 425 mm
Mass
Approx. 10.0 kg
Design and specifications are subject to change without
notice.
3
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.
To Exposed Metal 
Parts on Set
0.15 
µ
F
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
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 2V AC range are suitable. (See Fig. A)
HCD-RG555
4
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
HCD-RG555
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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 component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
Notes on Chip Component Replacement
Never reuse a disconnected chip component.
Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
Keep the temperature of 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.
The release method of a CD disc tray LOCK function
There is a disc lock function for the disc theft prevention for a
demonstration at a shop front in this machine.
Procedue:
1. Press the  ?/1  button to turn the set on.
2. Press two buttons of  x  and  Z (EJECT)  simultaneously for
five seconds.
3. The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked.)
4. Press two buttons of  x  and  Z (EJECT)  simultaneously for
five seconds again.
5. The message “UNLOCKED” is displayed and the tray is
unlocked.
6. To exit from this mode, press the  ?/1  button to turn the set
off.
Unleaded solder
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
 : LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40
°
C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350
°
C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
Page of 70
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Here you can read online and download Sony HCD-RG555 / MHC-RG555 Service Manual in PDF. HCD-RG555 / MHC-RG555 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-RG555 / MHC-RG555 Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.