Sony HCD-CP2A Service manual

HCD-CP2A

SERVICE MANUAL

HCD-CP2A is the Amplifier, CD player, Tape Deck and Tuner section in CMT-CP2WA.

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

CD Section

TAPE Section

AEP Model

UK Model

E Model

Australian Model

Model Name Using Similar Mechanism NEW CD Mechanism Type CDM55D-K5BD41 Base Unit Name BU-K5BD41 Optical Pick-up Name KSM-213CKP/K1N Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type CMBL6Z112

SPECIFICATIONS

Amplifier section

European and Australian models:

DIN power output (rated): 30 + 30 W

Continuous RMS power output (reference):

Music power output (reference):

Other models: The following measured at 230 V AC, 60 Hz

DIN power output (rated): 30 + 30 W

Continuous RMS power output (reference):

The following measured at 220 V AC, 60 Hz

DIN power output (rated): 28 + 28 W

Continuous RMS power output (reference):

Inputs MD IN (phono jacks): Sensitivity 500 mV, impedance

VIDEO IN (phono jacks): Sensitivity 250 mV, impedance

Outputs LINE OUT (phono jacks): Sensitivity 250 mV, impedance

OPTICAL DIGITAL OUT CD:

PHONES (stereo phone jack):

SPEAKER: Active speaker system, 6 ohms

(6 ohms at 1 kHz, DIN)

35 + 35 W (6 ohms at 1 kHz, 10% THD)

130 W

(6 ohms at 1 kHz, DIN)

35 + 35 W (6 ohms at 1 kHz, 10% THD)

(6 ohms at 1 kHz, DIN)

33 + 33 W (6 ohms at 1 kHz, 10% THD)

47 kilohms

1 kilohm

Optical

Accepts headphones with an impedance of 8 ohms or more

CD player section

System Compact disc and digital audio

Laser Semiconductor laser

Laser output MAX 44.6

Wavelength 780 - 790 nm Frequency response 20 Hz - 20 kHz (±0.5 dB)

Tape player section

Recording system 4-track 2-channel stereo Frequency response (DOLBY NR OFF)

system (λ = 780 nm)

Emission duration: continuous

* 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.

50 - 13,000 Hz (±3 dB), using a Sony TYPE I cassette 50 - 14,000 Hz (±3 dB), using a Sony TYPE II cassette

– Continued on next page –

COMPACT DISC DECK RECEIVER

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 - 108.0 MHz

Antenna FM wire antenna Antenna terminals 75 ohm unbalanced Intermediate frequency 10.7 MHz

AM tuner section

Tuning range European and Australian models:

Other models: 530 - 1,710 kHz

Antenna AM loop antenna, external antenna

Intermediate frequency 450 kHz

(50-kHz step)

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

(with the tuning interval set at 10 kHz) 531 - 1,602 kHz (with the tuning interval set at 9 kHz)

terminal

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 3

2. GENERAL

Location of Controls ....................................................... 4

Setting the Time .............................................................. 5

Parts Identification for the Remote................................. 5

3. DISASSEMBLY ......................................................... 6

4. TEST MODE.............................................................. 10

5. MECHANICAL ADJUSTMENTS ....................... 11

6. ELECTRICAL ADJUSTMENTS

Tape Deck Section .......................................................... 11

CD Section ...................................................................... 14

General

Power requirements European and Australian models:

Other models: 110 - 120 V or 220 - 240 V AC ,

Power consumption 70 W

Dimensions (w/h/d) Approx. 225 × 273 × 337 mm

Mass Approx. 6.7 kg

Design and specifications are subject to change without notice.

230 V AC, 50/60 Hz

50/60 Hz Adjustable with voltage selector

/8 × 10 3/4 × 13 3/8 in) incl.

(8 projecting parts and controls

(14 lb 12 oz)

7. DIAGRAMS

7-1. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 15

7-2. Printed Wiring Board – CD Board – .............................. 16

7-3. Schematic Diagram – CD Section – ............................... 17

7-4. Printed Wiring Board – TC Board – ............................... 18

7-5. Schematic Diagram – TC Section – ............................... 19

7-6. Schematic Diagram – MAIN Section (1/3) –................. 20

7-7. Schematic Diagram – MAIN Section (2/3) –................. 21

7-8. Schematic Diagram – MAIN Section (3/3) –................. 22

7-9. Printed Wiring Board – MAIN Board – ......................... 23

7-10. Printed Wiring Board – LOADING Board –.................. 24

7-11. Printed Wiring Board – LCD Board – ............................ 24

7-12. Printed Wiring Boards

– AMP/HEADPHONE Boards – .................................... 24

7-13. Sc hematic Dia gram – AMP Section – ............................ 25

7-14. Printed Wiring Board – CONTROL Board – ................. 26

7-15. Sc hematic Diagram – CONTROL Section –.................. 27

7-16. Printed Wiring Board – POWER Board – ...................... 28

7-17. Sc hematic Dia gram – POWER Section – ...................... 28

7-18. IC Pin Function Description ........................................... 35

8. EXPLODED VIEWS ................................................ 38

9. ELECTRICAL PARTS LIST ............................... 43

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 MANU AL OR IN SUPPLEMENTS PUBLISHED BY SONY.

SECTION 1

SERVICING NOTES

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 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.

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.

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

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.

• MODEL IDENTIFICATION – Rear Panel –

Power Voltage Indication

Laser component in this product is capable of emitting radiation exceeding the limit for Class 1.

The following caution label is located inside the unit.

CAUTION :

INTERLOCKS DEFEATED. AVOID EXPOSURE TO BEAM.

ADVARSEL :

SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION. UNDGÅ UDSAETTELSE FOR STRÅLING.

VORSICHT :

ABDECKUNG GEÖFFNET UND SICHEREITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN.

VARO! :

TIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.

VARNING :

OCH SPÄRREN ÄR URKOPPLAD. BETRAKTA EJ STRÅLEN.

ADVERSEL :

SIKKERHEDSLÅS BRYTES. UNNGÅ EKSPONERING FOR STRÅLEN.

VIGYAZAT! :

GÁRVESZÉLY! KERÜLJE A BESUGÁRZÁST!

INVISIBLE LASER RADIATION WHEN OPEN AND

USYNLIG LASERSTRÅLING VED ÅBNING NÅR

UNSICHTBARE LASERSTRAHLUNG, WENN

AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALT -

OSYNLING LASERSTRÅLING NÄR DENNA DEL ÄR ÖPPNAD

USYNLIG LASERSTRÅLING NÅR DEKSEL ÅPNES OG

A BURKOLAT NYITÁSAKOR LÁTHATATLAN LÉZERSU-

Model Power V oltage Indication

AEP, UK, North European and AC: 230 V -50/60 Hz 70 W Australian models

Saudi Arabia

AC: 110 – 120/220 – 240 V

-50/60 Hz 70 W

• LOCATION OF CONTROLS – Front View –

123

b B x

w;ql

b B x

+ –

SECTION 2

GENERAL

6 7 8

9 q;

1 TAPE A deck 2 TAPE B deck 3 Liquid crystal display 4 TAPE B Y button 5 TAPE B x button 6 TAPE B M button 7 TAPE B m button 8 VOLUME knob 9 TREBLE knob 0 BASS knob qa CD EJECT Z button qs CD REPEAT button qd CD PLAY MODE button qf TAPE A x button qg TAPE A Y button qh TAPE A m button qj TAPE A M button qk Remote control sensor ql PHONES jack w; CD disc tray

wa ws wd wfwg

b B x

wa HI-SPEED DUBBING AtB button and indicator ws DSG button and indicator wd X button (TAPE A/B) wf CD SYNC button and indicator wg REC button wh TUNING MODE button

b B x

–

wj TUNER BAND button wk TUNING +/– buttons wl CD u button e; CD x button ea > M button

es . m button ed I/1 button and indicator ef VIDEO button and indicator eg MD button and indicator

ekejehegef

eh TAPE button and indicator ej CD button and indicator ek TUNER button and indicator

This section is extracted from

Step 2: Setting the time

Before you can use the system’s timer functions,

set the internal clock.

The clock uses a 24-hour system on the European

model, and a 12-hour system on other models.

The 24-hour system is used here for illustration

purposes.

3,5

2,4

Press TIMER SET.

The hour indication flashes.

000

Press l/L repeatedly to set the

hour.

1300

Press ENTER.

The minute indication flashes.

1300

Press l/L repeatedly to set the

minute.

1310

Press ENTER.

The clock starts working.

To reset the system clock

You can reset the system clock when the system is

on.

1 Press TIMER SET.

2 Press l/L repeatedly until

“SET CLOCK” appears, then press ENTER.

3 Repeat step 2 to 5 in “Step 2: Setting the time”.

Tip

If you make a mistake, start over from step 1.

Additional Information

Parts identification for

the remote

You can also operate the system with the supplied

remote.

Buttons marked with

“*” are provided only on the

remote.

TUNER

Remote

Button(s)

Function

TUNER/BAND

Selects FM or AM.

Remote

Button(s)

Function

CD H

s Stops playback.

S Pauses playback.

l/L Selects a track (AMS: Automatic

Music Sensor).

j/J Locates a desired point in a

track.

CD REPEAT Repeats playback.

TAPE

Remote

Button(s)

For operating

the

Function

TAPE A (or B)

Deck A or B Starts playback.

Each time you

press this button,

the tape reverses

direction.

s Deck A or B Stops playback.

S Deck A or B Pauses playback.

j/J Deck A or B Fast-forwards or

rewinds.

z REC Deck B Records to tapes.

Remote

Button(s)

Function

?/1 Turns on or off the system.

VOL +/– Adjusts the volume.

FUNCTION Selects the source.

TUNING MODE Selects “AUTO”, “PRESET” or

“MANUAL”.

MEMORY* Presets a station.

STEREO/MONO* Selects “STEREO” or “MONO”.

l/L Selects a preset number.

j/J Scans for a station or selects a

preset station.

Starts playback.

PLAY MODE Selects Shuffle, Program or

Normal Play.

DISPLAY* Changes the front panel display.

DIR MODE* Deck A or B Selects “

”,

“

” or “R”.

DOLBY NR* Deck A or B Turns on or off the

Dolby NR system.

TIMER

Remote

Button(s)

Function

SLEEP* Selects a sleep time.

TIMER SET* Sets the time, Daily Timer or

REC Timer.

TIMER SELECT* Checks the settings and turns on

or off the timer.

OTHERS

DSG Generates a more dynamic

sound.

instruction manual.

SECTION 3

DISASSEMBLY

Note: Follow the disassembly procedure in the numerical order given.

COVER (UPPER)

3 cover (upper)

1 two case screws

2 six screws

(BTP3 × 8)

1 two case screw

FRONT PANEL ASS’Y

1 wire (flat type)(14 core)

(CN401)

6 front panel ass’y

4 screw

(KTP3 × 6)

5 two bosses

1 wire (flat type)(17 core)(22 cm)

2 connector

(CN311)

2 two connectors

(CN805, 808)

1 wire (flat type)(21 core)

(CN803)

1 wire (flat type)(23 core)

(CN806)

1 wire (flat type)(FFC)(17 core)

(23 cm)(CN801)

3 two screws

(BTP3 × 8)

4 screw

(KTP3 × 6)

TAPE MECHANISM DECK SECTION

)

2 Push these buttons.

1 six screws

(BTP3 × 8

CD MECHANISM DECK (CDM55D-K5BD41)

3 tape mechanism deck section

2 connector

(CN304)

3 screw

(BTP3 × 8)

1 wire (flat type)(19 core)

(CN301)

4 CD mechanism deck

(CDM55D-K5BD41)

BASE UNIT (BU-K5BD41)

2 base unit

(BU-K5BD41)

1 floating screw

(PTPWHM2.6)

TRAY, LOADING BOARD

3 Pull the tray pushing B.

2 belt (CDM55)

1 Rotate the gear(B) in

the direction of arrow A.

5 LOADING board

4 two screws

(BTP2.6 × 6)

CAM (CDM55)

3 spacer (55)

4 pulley (LDG)

2 lever (SW)

1 torsion spring

6 gear (B)

5 gear (A)

7 roller

8 cam (CDM55)

SECTION 4

TEST MODE

[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. While pressing the I/1 and x (T APE A) button, connect the

power cord.

2. The set is reset.

[Liquid Crystal Display All Lit Check Mode]

Procedure:

1. Set to standby state.

2. Press thr ee buttons of x (TAPE B), x (CD), and [VIDEO]

(function) simultaneously.

3. Liquid crystal display are all turned on.

4. To release from this mode, press the I/1 button to turn the

power OFF.

[ROM Version Display Mode]

Procedure:

1. Set to standby state.

2. Press three buttons of x (TAPE B), x (CD), and [DSG] si-

multaneously.

3. The ROM version is displayed.

[Tape Deck Aging Mode]

This mode can be used for operation check of tape deck section.

Procedure:

1. Set tapes in the tape deck-A and B.

2. Set to standby state.

3. Press three buttons of x (TAPE B), x (CD), and [TAPE] (function) simultaneously.

4. The aging is executed in bellow sequence.

5. To release from the aging mode, press the I/1 button to turn the power OFF.

Aging mode sequence:

Start

FWD play for 2 minutes *1

Fast forward for

20 seconds or till shut off

TAPE A

REV play for 3 minutes

[CD Aging Mode]

This mode can be used for operation check of CD section.

Procedure:

1. Load a CD disc.

2. Set to standby state.

3. Press three buttons of x (TAPE B), x (CD), and [TUNER] (function) simultaneously.

4. T he aging is executed in bellow sequence.

5. To release from the aging mode, press the I/1 button to turn the power OFF.

Aging mode sequence:

Start

Open the disc tray

Close the disc tray

Play the last track

TAPE B

Rewind for 10 seconds

FWD Play

1 minute

REC pause for 3 seconds

FWD REC

3 minutes

Fast forward for

20 seconds or till shut off

REV play for 1 minute

REC pause for 3 seconds

REV REC for 3 minutes

Shut off

Rewind for 30 seconds

or till shut off

*1) When it shuts off within 2 minutes, it

REV plays rest of the time then goes to the next step.

SECTION 5

MECHANICAL ADJUSTMENTS

SECTION 6

ELECTRICAL ADJUSTMENTS

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 demagnetizer.

3. Do not use a ma gnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. T he adjustments should be performed with the rated power supply voltage unless otherwise noted.

• Torque Measurement

• Tape Tension Measurement

• Tor que Measurement

Mode Torque Meter Meter Reading

Forward CQ-102C 36 to 61 g•cm

Forward Back Tension

Reverse CQ-102RC 36 to 61 g•cm

Reverse Back Tension

FF, REW CQ-201B 61 to 143 g•cm

CQ-102C 2 to 6 g•cm

CQ-102RC 2 to 6 g•cm

3.53 ~ 5.98 mN•m

(0.50 – 0.84 oz•inch)

0.20 ~ 0.58 mN•m

(0.026 – 0.082 oz•inch)

3.53 ~ 5.98 mN•m

(0.50 – 0.84 oz•inch)

0.20 ~ 0.58 mN•m

(0.026 – 0.082 oz•inch)

5.99 ~ 14.02 mN•m

(0.85 – 1.98 oz•inch)

• T ape Tension Measurement

Mode Tension Meter Meter Reading

Forward CQ-403A

Reverse CQ-403R

more than 9.8 N

more than 100 g (3.52 oz)

more than 9.8 N

more than 100 g (3.52 oz)

0 dB=0.775 VTAPE DECK SECTION

1. Demagnetize the record/playback head with a head demagnetizer. (Do not bring the head demagnetizer close to the erase head)

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 adjustment should be completed before performing recording circuit adjustment)

6. The adjustments should be performed for both L-CH and Rch.

7. Switches and controls should be set as follows unless otherwise specified.

• Test T ape

Tape Signal Used for

P-4-A100 10 kHz, –10 dB Azimuth Adjustment

WS-48B 3 kHz, 0 dB Tape Speed Check

P-4-L300 315 Hz, 0 dB Level Adjustment

Record/ Playback Head Azimuth Adjustment

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

test tape P-4-A100 (10 kHz, –10 dB)

set

MAIN board IC306 Pin r; (L-CH) Pin 3 (R-CH)

MAIN board IC306 Pin rl

level meter

+ –

(

)

(

)

1. Mode: Playback (FWD)

2. Turn the adjustment screw and check output peaks. If the peaks do not match for L-CH and R-CH, turn the adjustment screw so that outputs match within 1dB of peak.

Tape Speed Check

Procedure:

Mode: Playback (FWD)

test tape WS-48B (3 kHz, 0 dB)

DECK A DECK B

frequency counter

within

output level

1dB

L-CH peak

R-CH peak

within 1dB

Screw position

L-CH peak

Screw position

R-CH peak

3. Mode: Playback (FWD)

test tape P-4-A100 (10 kHz, –10 dB)

L-CH

MAIN board IC401 set

R-CH

waveform of oscilloscope

in phase 45 °

pin r;

pin rl

90 ° 135 ° 180 °

good

oscilloscope

wrong

4. Repeat steps 1 to 3 in playback (REV) mode.

5. After the adjustments, apply suitable locking compound to the pats adjusted.

Adjustment Location: Record/Playback Head (Deck A and B)

and MAIN board.

set

MAIN board IC306(Pin r; : L-CH)

Pin 3 : R-CH

–

1. Insert the WS-48B into the deck A and the blank tape into the deck B.

2. Press the [HI-SPEED DUBBING] button and X button. Then at HIGH speed dubbing.

3. Check that frequency counter reads 6,000 ± 180 Hz.

4. Press the x (TAPE A or B) button to stop the HIGH speed dubbing.

5. Press the [REC ], X and Y button.

Then at NORMAL speed dubbing.

6. Check that frequency counter reads 3,000 ± 90 Hz.

7. Press the

x (T APE A or B) button to stop the NORMAL speed

dubbing.

8. Frequency difference between deck A and deck B the beginning of the tape should be within ± 1.5%.

Checking Location: MAIN board

Sample Value of Wow and flutter: 0.3% or less W. RMS (JIS)

(WS-48B)

Playback level Adjustment

DECK A DECK B

Procedure:

Mode: Playback (FWD)

test tape P-4-L300 (315 Hz, 0 dB)

set

MAIN board IC306 (Pin r; : L-CH)

level meter

–

Pin 3 : R-CH

forward

Deck A is RV401 (L-CH) and RV421 (R-CH), Deck B is RV402 (L-CH) and RV422 (R-CH) on the TC board so that adjustment within adjustment level as follows.

Adjustment Level:

revers

IC306 PB level: 301.5 to 338.3 mV (–8.2 to –7.2 dB) level difference between the channels: within ± 0.5 dB

Adjustment Location: TC and MAIN boards

Record bias Current Adjustment

(

)

(

)

Procedure:

1. Mode: Record

Pin rd (L-CH) of IC306 on the MAIN board. Pin th (R-CH) of IC306 on the MAIN board.

1) 315 Hz

2) 10 kHz

AF OSC

attenuator

Pin rl (GND) of IC306 on the MAIN board.



50 mV (–23.8 dB)

 

600 Ω

2. Mode: Playback

recorded portion

set

DECK B

set

level meter

–

blank tape CN-123

Adjustment and Checking Location:

– MAIN BOARD (Conductor Side) –

Record Level (R)

Record Level (L)

RV201

RV101

IC306

IC306 (Pin r; : L-CH)

Pin 3 : R-CH

Confirm playback the signal recorded in step 1 become adjustable limits as follows. If these levels do not adjustable limits, adjustment the RV403 (LCH) and RV423 (R-CH) on the TC board to repeat steps 1 and 2. Adjustable limits: Playback output of 315 Hz to playback output

of 10 kHz: 0 ± 0.5 dB

Adjustment Location: TC and MAIN boards

Record Level Adjustment

DECK B

Procedure:

1. Mode: Record

Pin rd (L-CH) of IC306 on the MAIN board. Pin

th (R-CH) of IC306 on the MAIN board.

AF OSC

315 Hz, 50 mV (–23.8 dB)

attenuator

rl (GND) of IC306 on the MAIN board.

600 Ω

set

blank tape CS-123

2. Mode: Playback

– TC BOARD (Component Side) –

Playback Level

(Deck-A)

LL LRR R

RV401 RV421 RV402 RV422

Playback Level

(Deck-B)

Record Bias

Current

RV403

RV423

recorded portion

set

IC306 (Pin r; : L-CH)

level meter

–

Pin 3 : R-CH

Confirm playback the signal recorded in step 1 become adjustable limits as follows. If these levels do not adjustable limits, adjustment the RV101 (LCH) and R V201 (R-CH) on the MAIN board to repeat steps 1 and

Adjustable limits:

IC306 PB level: 36.7 to 41.1 mV (–26.5 to –25.5 dB)

Adjustment Location: MAIN board

CD SECTION

Note:

1. CD Block is basically constructed to operate without adjustment.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10 MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

5. Check the focus bias check when optical block is replaced.

Focus Bias Check

oscilloscope

(DC range)

BD board

– CD BOARD (Conductor Side) –

TP (RF) TP (VC)

–

Procedure :

1. Connect oscilloscope to TP (RF) and TP (VC) on the CD board.

2. Press the I/1 button to turn the power on, and press the Z (CD) button to open the CD disc tray.

3. Put disc (YEDS-18) in and press the u (CD) button to playback.

4. Confirm that oscilloscope waveform is as shown in the figure below. (eye pattern) A good eye pattern means that the diamond shape ( ) in the

center of the waveform can be clearly distinguished.

VOLT/DIV: 200 m TIME/DIV: 500 ns

level:

1.2 ± 0.1 Vp-p

Checking Location:

IC103

TP (RF)

TP (VC)

SECTION 7

POWER board

LCD board

TC board

CONTROL board

HEADPHONE board

LOADING board

CD board

MAIN board

AMP board

TUNER PACK (TCB-020)(AEP, UK, Australian) TUNER PACK (TCB-020N)(Saudi Arabia)

DIAGRAMS

HCD-CP2A

7-1. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• W : indicates side identified with part number.

• b : Pattern from the side which enables seeing.

• Abbreviation AUS : Australian model EA : Saudi Arabia model

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

• All resistors are in Ω and 1/ specified.

•

• C : panel designation.

Note: The components identified by mark 0 or dotted line

• U : B+ Line.

• V : B– Line.

• H : adjustment for repair.

• V oltages are taken with a VOM (Input impedance 10 MΩ).

• Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

• Abbreviation

: internal component.

with mark 0 are critical for safety. Replace only with part number specified.

Voltage variations may be noted due to normal production tolerances.

F : TUNER E : TAPE PLAY (DECK A) d : TAPE PLAY (DECK B) G : TAPE REC J : CD PLAY (ANALOG) c : CD PLAY (DIGITAL)

AUS : Australian model EA : Saudi Arabia model

• Circuit Boards Location

W or less unless otherwise

1515

HCD-CP2A

7-2. PRINTED WIRING BOARD – CD Board – • See page 15 for Circuit Boards Location.

• Semiconductor Location

Ref. No. Location

IC101 C-2 IC102 B-3 IC103 C-2

Q101 B-1

(Page 23)

1616

7-3. SCHEMATIC DIAGRAM – CD Section – • See page 29 for Waveforms. • See page 31 for IC Block Diagrams.

HCD-CP2A

(Page 21)

• Voltages and waveforms are dc with respect to ground under no-signal conditions. no mark : CD PLAY

The components identified by mark 0 or dotted line with mark 0 are critical for safety. Replace only with part number specified.

: Impossible to measure

∗

1717

+ 37 hidden pages