background image

HCD-G2500/XB20/XB22

US Model

HCD-G2500

AEP Model

UK Model

HCD-XB20

E Model

Australian Model

HCD-XB22

SERVICE MANUAL

MINI Hi-Fi COMPONENT SYSTEM

MICROFILM

— Continued on next page —

SPECIFICATIONS

Model Name Using Similar Mechanism

NEW

CD Mechanism Type

CDM375BD29

Base Unit Type

KSM-213ECM

Optical Pick-up Type

KSS-213B/SN

Model Name Using Similar Mechanism

HCD-GRX2/RX33

DECK-A

TK20FX-SW943-800

DECK-B

TK20FX-SW943-800

CD

SECTION

TAPE

DECK

SECTION

Tape Transpor
Mechanism Type

• This set is the tuner, deck, CD and amplifier

section in LBT-G2500/XB20/XB22.

Photo : HCD-XB20

Peak music power output (Reference)

800 W

Inputs

PHONO IN (phone jacks):

sensitivity 3 mV, impedance 47 kilohms

Outputs

PHONES (stereo phone jack):

accepts headphones of 8 

 or more

SPEAKER:

accepts impedance of 6 to 16 

CD player section

System

Compact disc and degital audio system

Laser

Semiconductor laser ( 

λ

 = 780 nm)

Emission duration: continuous

Laser output

Max.44.6 µW*
*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

Frequency response

20 Hz – 20 kHz (±0.5 dB)

Wavelength

780 – 790nm

Tape deck section

Recording system

4-track 2-channel stereo

Frequency response

60 – 13,000 Hz (±3 dB),

(DOLBY NR OFF)

using a Sony TYPE I cassette

AUDIO POWER SPECIFICATIONS:
(U.S.A. model only)

POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 6 

 loads both channels driven, from 70 – 20,000 Hz; rated 60 W

per channel minimum RMS power, with no more than 0.9% total
harmonic distortion from 250 mW to rated output.

Amplifier section

North American model

Continuous RMS power output

70 W + 70 W (6 

 at 1 kHz, 10% THD)

Total harmonic distortion

less than 0.09% (6 

 at 1kHz, 30 W)

European model

DIN power output (Rated) 60 W + 60 W (6 

 at 1 kHz, DIN)

Continuous RMS power output (Reference)

70 W + 70 W (6 

 at 1 kHz, 10% THD)

Music power output (Reference)

120 W + 120 W (6 

 at 1 kHz, 10%THD)

Other models

The following measured at AC 110,220 V 60 Hz;
DIN power output (Rated) 45 W + 45 W (6 

 at 1 kHz, DIN)

Continuous RMS power output (Reference)

55 W + 55 W (6 

 at 1 kHz, 10% THD)

The following measured at AC 120, 240 V 60Hz;
DIN power output (Rated) 50 W + 50 W (6 

 at 1 kHz, DIN)

Continuous RMS power output (Reference)

60 W + 60 W (6 

 at 1 kHz, 10% THD)

*

Dolby noise reduction manufactured under
license from Dolby Laboratories Licensing
Corporation.
“DOLBY” and the double-D symbol 

a

 are

trademarks of Dolby Laboratories Licensing
Corporation.

www.freeservicemanuals.info

It`s free

All over the world

Summary of Contents for HCD-G2500

Page 1: ... www freeservicemanuals info It s free All over the world ...

Page 2: ... www freeservicemanuals info It s free All over the world ...

Page 3: ... www freeservicemanuals info It s free All over the world ...

Page 4: ... Tape deck section Recording system 4 track 2 channel stereo Frequency response 60 13 000 Hz 3 dB DOLBY NR OFF using a Sony TYPE I cassette AUDIO POWER SPECIFICATIONS U S A model only POWER OUTPUT AND TOTAL HARMONIC DISTORTION With 6 Ω loads both channels driven from 70 20 000 Hz rated 60 W per channel minimum RMS power with no more than 0 9 total harmonic distortion from 250 mW to rated output Am...

Page 5: ...tor 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 Laser component in this product is capable of emitting radiation exceeding the limit for Class 1 This ap...

Page 6: ...nd Fig A Using an AC voltmeter to check AC leakage TABLE OF CONTENTS 1 GENERAL 4 FRONT PANEL 4 BACK PANEL 5 2 DISASSEMBLY 2 1 Top Cover 6 2 2 Front Panel Assy 6 2 3 Main Board 7 2 4 Main Section 7 2 5 CD Mechanism Deck Section 8 2 6 Tape Mechanism Deck 8 2 7 Cassette Door 9 2 8 CD Door Assy 9 2 9 Base Unit 10 2 10 Disc Table 10 3 MECHANICAL ADJUSTMENTS 11 4 ELECTRICAL ADJUSTMENTS 11 5 DIAGRAMS 5 1...

Page 7: ...tton º button 6p button P button 6 button button DISC SKIP button P button p button button ª AMS button º 0 button DISC1 button DISC2 button DISC3 button DISC4 button DISC5 button r button button 0 button ª button º 6p button P button PHONES jack ROCK button POP button JAZZ button SALSA button FLAT button SLEEP button ª t CLOCK SET button º DAILY1 button PLAY MODE button REPEAT button EDIT button ...

Page 8: ... 5 1 ANTENNA terminal 2 PHONO jack 3 SPEAKER terminal 3 2 1 BACK PANEL www freeservicemanuals info It s free All over the world ...

Page 9: ... disassembly procedure in the numerical order given 2 1 TOP COVER 2 2 FRONT PANEL ASSY 2 Seven screws 1 Three screws 1 Three screws 3 Top cover 3 Front panel assy 2 Four screws 1 Screw www freeservicemanuals info It s free All over the world ...

Page 10: ...1 Two screws 2 Three screws 2 Three screws 2 Two screws 1 Three screws 3 Rear panel 7 MAIN board 6 Two screws 5 Two flat wires 4 Connector 1 Two screws 1 Two screws 2 Main section www freeservicemanuals info It s free All over the world ...

Page 11: ...DECK SECTION 2 6 TAPE MECHANISM DECK 3 Five screws BVTP 3 8 4 CD mechanism deck section 2 Flat wire and lead wire 1 Open the clamp 1 Six screws 2 Tape mechanism deck www freeservicemanuals info It s free All over the world ...

Page 12: ...Y 3 Door spring 1 Cassette door R 3 Door spring 2 Cassette door L 8 CD door assy 1 Three screws 6 Four screws 7 Connector 4 Screw 2 PLAY SW board 3 Three flat wires 5 DOOR SW board www freeservicemanuals info It s free All over the world ...

Page 13: ...adjust the positions of roller cam and mark z as shown in the figure then set to the groove of disc table 1 Screw BVTP 3 8 1 Screw BVTP 3 8 4 Disc table 3 Step screw 2 Bracket BU A A 3 Base unit 1 Yoke bracket 2 Boss www freeservicemanuals info It s free All over the world ...

Page 14: ...emagnetize the record playback head with a head damagnetizer 2 Do not use a magnetized screwdriver for the adjustments 3 After the adjustments apply suitable locking compound to the parts adjusted 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...

Page 15: ... Playback 2 Adjust the SFR809 so that the frequency counter reads 3 000 Hz 90Hz Adjustment Location MAIN board See page 14 Sample Value of Wow and flutter W RMS JIS within 0 3 test tape WS 48B L CH peak R CH peak screw position output level within 2dB within 2dB L CH peak screw position R CH peak test tape P 4 A100 10kHz 10dB SPEAKER terminal JK703 L CH set L R SPEAKER terminal JK703 R CH Waveform...

Page 16: ...scope is maximum no noise appears Repeat the procedures in each adjustment several times and the tracking adjustment should be finally done by the trimmer capacitors Adjustment Location MAIN board See page 14 FM Tuning Voltage Adjustment US Australian Mexican model DC voltmeter Procedure 1 Set the reception frequency of the unit to 87 5 MHz 2 Adjust L103 for 1 2 0 05V reading on the DC voltmeter 3...

Page 17: ...Repeat the procedures in each adjustment several times and the tracking adjustment should be finally done by the trimmer capacitors Adjustment Location MAIN board Adjustment Location MAIN BOARD Component side Carrier frequency 90 MHz 106 MHz Modulation AUDIO 1kHz 75kHz deviation 100 Output level 20 dB at 75 Ω open FM RF SSG Carrier frequency 98 MHz Modulation AUDIO 1 kHz 75 kHz deviation 100 Outpu...

Page 18: ...ar RF signal waveform means that the shape can be clearly distinguished at the center of the waveform oscilloscope level 1 0 Vp p VOLT DIV 200 mV TIME DIV 500 nS 0 3 0 2 Adjustment Location CD DECODER board Procedure 1 Connect DC voltmeter to test point TP02 on CD DECODER board 2 Turned Power switch on 3 Put disc YEDS 18 in and stop 4 Adjust VR01 so that the DC voltmeter reading is 0 20 mV Adjustm...

Page 19: ... www freeservicemanuals info It s free All over the world ...

Page 20: ... www freeservicemanuals info It s free All over the world ...

Page 21: ... www freeservicemanuals info It s free All over the world ...

Page 22: ... www freeservicemanuals info It s free All over the world ...

Page 23: ... www freeservicemanuals info It s free All over the world ...

Page 24: ... www freeservicemanuals info It s free All over the world ...

Page 25: ... www freeservicemanuals info It s free All over the world ...

Page 26: ... www freeservicemanuals info It s free All over the world ...

Page 27: ... www freeservicemanuals info It s free All over the world ...

Page 28: ... www freeservicemanuals info It s free All over the world ...

Page 29: ... www freeservicemanuals info It s free All over the world ...

Page 30: ... www freeservicemanuals info It s free All over the world ...

Page 31: ... www freeservicemanuals info It s free All over the world ...

Page 32: ... www freeservicemanuals info It s free All over the world ...

Page 33: ... www freeservicemanuals info It s free All over the world ...

Page 34: ... www freeservicemanuals info It s free All over the world ...

Page 35: ... www freeservicemanuals info It s free All over the world ...

Page 36: ... www freeservicemanuals info It s free All over the world ...

Page 37: ... www freeservicemanuals info It s free All over the world ...

Page 38: ... www freeservicemanuals info It s free All over the world ...

Page 39: ... www freeservicemanuals info It s free All over the world ...

Page 40: ... www freeservicemanuals info It s free All over the world ...

Page 41: ... www freeservicemanuals info It s free All over the world ...

Page 42: ... www freeservicemanuals info It s free All over the world ...

Page 43: ... www freeservicemanuals info It s free All over the world ...

Page 44: ... www freeservicemanuals info It s free All over the world ...

Page 45: ... www freeservicemanuals info It s free All over the world ...

Page 46: ... www freeservicemanuals info It s free All over the world ...

Page 47: ... www freeservicemanuals info It s free All over the world ...

Page 48: ... www freeservicemanuals info It s free All over the world ...

Page 49: ... www freeservicemanuals info It s free All over the world ...

Page 50: ... www freeservicemanuals info It s free All over the world ...

Page 51: ... www freeservicemanuals info It s free All over the world ...

Page 52: ... www freeservicemanuals info It s free All over the world ...

Page 53: ... www freeservicemanuals info It s free All over the world ...

Page 54: ... www freeservicemanuals info It s free All over the world ...

Page 55: ... www freeservicemanuals info It s free All over the world ...

Reviews: