Sony hcd gx 8800 service manual

Page 1

HCD-GN700/GX8800

SERVICE MANUAL

Ver 1.0 2003.04

HCD-GN700/GX8800 are the amplifier,
CD player, tape deck and tuner section
in MHC-GN700/GX8800.

US Model

HCD-GXB800

E Model

HCD-GN700

Photo: HCD-GN700

Model Name Using Similar Mechanism NEW
CD CD Mechanism Type CDM74-KGBD47S
Section Base Unit Name BU-KSBD47S

Optical Pick-up Name KSM-213DCP
TAPE Model Name Using Similar Mechanism HCD-XGRGS/XGR600
Section Tape Transport Mechanism Type CWM43RR23

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS
(MHC-GX8800 USA model only)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:

With 6-0hm loads, both channels driven. from 120 Hz - 10 kHz; rates
200 watts per channel minimum RMS power, with no more than 10%
total harmonic distortion from 250 miliwatts to rated output.

Amplifier section
MHC-GXSSOU
Total harmonic distortion Less than 0.1%
(6 ohms at 1 kHz, 100 W)
MHC-GN7UO
The following are measured at AC 127V, 60 Hz (Mexican model only)
The following are measured at AC 120, 220, 240V 50/60 Hz
(except Mexican model)
DIN power output (rated) 160 + 160 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)

200 + 200 watts

(6 ohms at 1 kHz, 10% THD)

Inputs

GAME (VIDEO): I Vp-p, 75 ohms

(phono jack)

GAME (AUDIO): Voltage 250 mV,

(phono jacks) impedance 47 kilohms
MD/VIDEO (AUDIO) IN: voltage 450 mV/250 mV,
(phonojacks) impedance 47 kilohms

MIC: sensitivity 1 mV.

(phone jack) impedance 10 kilohms

9-877-280-01 Sony Corporation

2003D0200-1 Home Audio Company

© 2003.04 Published by Sony Engineering Corporation

Outputs
VIDEO OUT: max. output level 1 Vp-p,
(phonojacks) unbalanced. Sync.

negative load impedance 75 ohms
PHONES: accepts headphones of
(stereo mini jack) 8 ohms or more
FRONT SPEAKER: accepts impedance of 6 to 16 ohms

SURROUND SPEAKER: accepts impedance on4 ohms or more

CD player section

System Compact disc and digital audio system
Laser Semiconductor laser

(1:795nm)
Laser Output Max. 44.6 uW"

*This output is the value measured at a
distance of 200 mm from the objective
lens surface on the Optical Pick-up
Block with 7 mm aperture.

2 Hz - 20 kHz (£05 dB)

795 nm

Frequency response

Wave length

CD OPTICAL DIGITAL OUT
(Square optical connectorjack, rear panel)
Wave length 660 nm
Output Level -18 dBm

- Continued on next page -

MiNi Hi-Fi COMPONENT SYSTEM
S 0 NY.

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HCD-GN700/GX8800

Tape player section
Recording system
Frequency response

Tuner section

4-track 2-channel stereo
50 - 13,000 Hz (i3 dB). using Sony
TYPE I cassette

FM stereo, FM/AM superheterodyne tuner

FM tuner section
Tuning range

Antenna

Antenna terminals
Intermediate frequency

AM tuner section
Tuning range

87.5 - 108.0 MHz
FM lead antenna
75 ohm unbalanced
10.7 MHz

North and Latin American models:

Middle Eastern models:

Other models:

Antenna
Antenna terminals
Intermediate frequency

General

Power requirements
US model:
Mexican models:
Argentina models:
Other models:

Power consumption
MI-IC-GN700
MHC-GX8800
Dimensions (w/h/d)
M
HCD-GN700/GX8800

530 - 1,710 kHz

(with the interval set at 10 kHz)
531-1,710kI-Iz

(with the interval set at 9 kHz)
531 - 1,602 kI-Iz

(with the interval set at 9 kHz)
531 - 1,602 kHz

(with the interval set at 9 kHz)
530 - 1,710 kI-Iz

(with the interval set at 10 kHz)
AM loop antenna

External antenna terminal

450 kHz

120 V AC, 60 Hz

120 or 127 V AC, 60 Hz

220 V AC, 50/60 Hz

120 V, 220 V or

230 - 240 V AC, 50/60 Hz
Adjustable with voltage selector

205 watts
220 watts
Approx. 280 x 360 x 386.5 mm

Approx. 11.4 kg

Design and specifications are subject to change without notice.

Notes on chip component replacement

I Never reuse a disconnected chip component.

I Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.

Flexible Circuit Board Repairing

I Keep the temperature of the soldering iron around 270 C dur-
ing repairing.

I Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

I Be careful not to apply force on the conductor when soldering
or unsoldering.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.

This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.

SAFETY CHECK-OUT

After correcting the original service problem, perform the fol-
lowing safety checks 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.

CLASSI LASER PRODUC
.uoxm v LASERLMIE

(JtSS LASERAFPARAT

LEAKAGE

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 chas s, must not exceed 0.5 mA (500 microampers).
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 batteryaoperated AC voltmeter. The limit" indication
is 0.75 V, so analog meters must have an accurate lowAvoltage
s let The Simpson 250 and Sanwa SH-63Trd are examples of
a p 'sive VOM that is uitablet Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)

7b Exposed Metal
Parts on Set
I
7
4.
AC
__ Voltmeter
0. 15 F ._
a $1.5) (0-75 V)
4.
<7
? Earth Ground
Fig. A. Using an AC voltmeter to ched< AC leakage.

SAFETY-RELATED COMPONENT WARNING I!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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 PUB-
LISHED BY SONY.