D2 Service Manual

5/14/2018 D2 Service Manual

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US ModelCanadian Model

D-2AEP ModelUK Model

ModelAustralian Model

D-20

SPEct FICATIONSCD sectionSystemLaser diode propert ies

Compact disc digital audio systemMaterial: GaAlAsWavelength: 780 nmEmission duration: ContinuousLaser output: Less than 44.6,. ,W(This output is the value measured at a distance of 200mmfrom the objecti ve lens surface on the Optical Pick-upBlock.)20-20,000 HZ'j dBLine output (stereo minijack)Output level 1V rms at 47kilohmsLoad impedance over 10kilohms

Headphones (stereo minijack)9mW+9mW at 320hms

Frequency responseOutput (al 9V input level)

GeneralPower requirements

Power consumptionDimension

Optionale DC IN 9V jack accepts the Sony AC power adaptor (supplied) DC IN 9V accepts the Sony CPM-l00P mount plate for useon 12V car batte ryDC 6V, four s ize AA (LR6) alkal ine batter ies1.2W DCApprox. 136x38xI49mm (5'hx l'/ ,x6in.) (wlh/d)inc !. project ing parts and controlsApprox, 450g (lib) netApprox, 545g (11b 30z) inc l. batter iesConnecting cord (1)Carry ing bel t (1)AC power adaptor (1 )

WeightSupplied accessories

CAUTIONUse of controls or adjustments or performance of pro-cedures other than those specified herein may result inhazardous radiation exposure,


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TABLE OF CONTENTS

Section

Specifications 11. GENERAL 22. SERVICING 33. ELECTRICAL ADJUSTMENTS 64. DIAGRAMS

4-1. Semiconductor Lead Layouts114-2. Printed Wiring Boards ..12

Section

4-3. Schematic Diagram "154-4. Wave forms 184-5. IC Block Diagram 194-6. LCD Module...... ....... ..20

5. EXPLODED VIEWS .. ......216. ELECTRICAL PARTS LIST .. .... .. .... 24SUPPLEMENT-1SUPPLEMENT-2

SECTION 1GENERAL

I.... ~ (AMS*/Search)b u t t o n s

L e n sThe laser beam i s emitt ed fr om th is po in tto pick-up signal on the disc.

Batterycompartmentid

VOLUMEcontrol----,.,/(for headphones listening)

PLAYMODEbutton----'(stereo mlnijack)

---~I (play/pause)utton

KEYMODEbutton-----/ '-----HOLD switch

LINEOUTjack-__"';::-IO..(stereo minijack)

REMOTEackConnect the optionalremote control unit.

'"AMS is anabbreviation for Automatic Music Sensor.

" . ," " . " . , . " - . " ' _ _ , _ _ .o ~- __ ." __ o I l O _ . , " ' . . . . . . . . ~ . ' . I I ' . " . " . , 11- _ " __ "P" __ ," "_~ _ "_ 11_ __ . I1 _ " . "" . U . ' U. "W . , . I . . " . . . " . , " . . " - ! , , - . . . . . " . " . , < i " . . . . .. , "_ . " - . I1 .

SAFETY-RELATED COMPONENT WARNING!!COMPONENTS IDENTIFIED BY MARK & , OR DOTTEDLINE WITH MARK & , ON THE SCHEMATIC DIAGRAMSAND IN THE PARTS LIST ARE CRITICAL TO SAFEOPERATION. REPLACE THESE COMPONENTS WITHSONY PARTS WHOSE PART NUMBERS APPEAR ASSHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-LISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORTA LA SECURITE!LES COMPOSANTS IDENTIFIES PAR UNE MARQUE & ,SUR LES DIAGRAMMES SCHEMATIQUES ET LA LISTEDES PIECES SONT CRITIQU!:S POUR LA SECURITEDE FONCTIONNEMENT. NE REMPLACER CES COMPOSANTS QUE PAR DES PIECES SONY DONT LESNUMEROS SONT DONNES DANS CE MANUEL OUDANS LES SUPPLEMENTS PUBLIES PAR SONY.

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0-2/20SECTION 2

SERVICING NOTESNOTES ON HANDLING THE OPTICAL PICK-UP BLOCKOR BASE UNIT

The laser diode in the optical pick-up block may sufferelectrostatic breakdown because of the potential differencegenerated by the charged electrostatic load, etc. on clothingand the human body.During repair, pay attention to electrostatic breakdown. andalso use the procedure in the printed matter which isincluded in the repair parts.The flexible board is easily damaged and should be handledwith care.

Flexible Circuit Board RepairingKeep the temperature of the soldering iron around270C during repairing.Do not touch the soldering iron on the same conductorof the circuit board (within 3 times).

Be careful not to apply force on the conductor whensoldering or unsoldering,

Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor maybe damaged by heat.

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Before Replacing the Optical BlockPlease be sure to check thoroughly the parameters as parthe "Optical Block Checking Procedures" (Part No.: 9-960-027-11) issued separately before replacing the optical block.Note and specifications required to check are given below.FOK output: lC501 pinWhen checking FOK, remove the lead wire to disc motorand unsolder and open IC801@pin (FOK).

S carve P-to-P value: 3Vp-pWhen checking S carve P-to-P value, remove the lead wireto disc motor.Adjusted part for focus gain adjustment: RV501RF signal P-to-P value: 0.7 - 1.25Vp-p

Traverse signal P-to-P value: 1.5Vp-p The repairing grating holder is impossible. Adjusted part for tracking gain adjustment: RV502


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NOTES ON LASER DIODE EMISSION CHECKThe laser beam on this model is concentrated so as tobe focused on the disc refiectivesurface by the objectivelens in the optical pick-up block. Therefore, when checkingthe laser diode emission, observe more than 25cm away fromthe objective lens.

Laser Diode Check ProcedureThe laser diode on this set will not emit unless the toppanel is closed and S801 (leaf SW type) is turned on. Thelaser diode will always emit even if focus search is notperformed in service mode.The laser diode is checked using. the current value whichflows to the laser diode inside the optical pick-up block.

Procedure 1 (service mode or normal operation)Check the laser diode emission with the eye.

1. Open upper panel.2. S801 on as Fig. 1.(In service mode, this operation is not necessary.)

3. Press the ~II key.(In service mode, this operation is not necessary.)

4. Observe the objective lens and confirm that thelaser diode is emitting light. At this time, the laserdiode goes on about 10 seconds due to focus serarch.If it does not, APC circuit or optical pick-up block isdefective.

Fig.1 Turning S801 on

Procedrue 2 (service mode or normal operation)Check by the current with flows in the laser diode.

1. Close the top panel.2. Remove the main board and read the current value

on the label affixed to the UPF.(Label on optical pick-up block)

KSS-162AJAPAN

S123I 546 I current. valueI---if--his means 54.6mA.

The current value varies with the set.3. Connect a VOM as shown in Fig. 2.4. Press the ~II key.5. Calculate the current by the VOM reading.VOM reading (V) + 10= current (A)ex. VOM reading=0.56V0.56+10=0.056 (A) =56 (rnA)

6. Confirm that the ammeter reading is within therange given below.value on label::;, rnA (25C)variation relative to temperature: O.4mA/oC(Current increases when temperature rises anddecreases when it drops.)

If the value is more than the range give, APC circuithas been defective. or the laser diode has deteriorated.If it is less, APC circuit or optical pick-up block isdefective.

- main board-

VOM- ' f - - ~ - - ( - 1 1' I f '' ~ - - - - - - - - ~ - - - - - - - - - - - - ~ I\ C ? _

o !---o

o o ooFig.2 YOM Connection

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SERV ICE MODE (service program)This set has built-in service program in the microcom-puter as usual sets.The operation method of service program is explained below.

.... (pR )[ U~Fgoes to inside]C 1 r c um f e r e nc e ,

]:M ain ope ration in se rvice m odefor de tai Is. re fe r to step 2.

se rvo all of f ]

P L A Y - l i l D E OFP--


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0-2/20SECTION 3

ELECTRICAL ADJUSTMENTSNotes on Adjustment1. Perform adjustments except for RECHARGEABLE

VOLTAGE ADJUSTMENT in service mode.Be sure to release service mode after completingadjustment.(Refer to "Service Mode (service program)' on page 5,)

2. Perform adjustments in the order given.3. Use YEDS-18 disc (part No. : 3-702-101-01)unless otherwise

indicated.4. Power supply voltage: DC 9V

HOLD switch: OFFPREPARATIONPut the set into service mode (See page 5.) and performthe following checks. Repair if there are any abnormalities .

Sled Motor Check1. Press the OPEN button and open the top panel.2. Press the ~. ~ keys and make sure that the optic1 pick-

up block moves smoothly. without catching. from theinmost _.,outmost _.,inmost circumference.~ : opticl pick-up block mov'es outward~ : optic1 pick-up block moves inward

Focus Search Check1. Press the OPEN button and open the top panel.2. Press the ~IIkey. (Focus search is performed continuously.)3. Observe the optic1 pick-up block objective lens and check

that it moves smoothly up and down with no catchingor noises.

4. Press the" key.Check that focus search operation stops. If it does not.press the .. key again.

Ivc (1/2 Vee) Connecting PointlFOCUS BIAS ADJUSTMENTTRACKING BALANCE ADJUSTMENT

When the adjustments above are performed. connect theeside of oscilloscope to the point below.

oscilloscope

~ - ..L~ to adjustment pointTP(VC)

- main board-

o

VC connecting point

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IS.3V Adjustmen~IAdjustment Procedure:1. Put the set into service mode (see page 5).2. Connect the YOM to main board test point TP( + 5.3V).3. Adjust RV401 for 5.2V-5.3V reading on the YOM.4. After adjustment, release service mode (see page 5).

YOM(DC range)main board ~TP(+5.3V) +orTP(+3.5V) -

Adjustment Location: main board

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13.SV Adjustmentl

Adjustment Procedure:1. Put the set into service mode (see page 5).2. Connect the YOM to main board test point TP (+3.5V).3. Adjust the pattern connection (@or@) to obtain 3,45V

to 3.6V reading on the YOM;

pattern connection YOM readi ngA B0 x downx x t00 0 up0: short X: open

4. After adjustment, release service mode (see page 5).

RV401

--IIII

ooo o oo


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!PLL Free Run Frequency Check and Adjustment!Check/Adjustment Procedure:

frequency counter::_~ ~TP(PLCK) ~,;___j

1. Disconnect EFM solder jumper terminal in the diagrambelow.

2. Connect a frequency counter to main board test pointTP(PLCK).

3. Put the set into service mode (See page 5).4. Check that the frequency counter reading is 4.31O.OI

MHz. If not, adjust RV505 so that it is 4.31O.OIMHz.5. After adjustment, release service mode (see page 5).6. Short the jumper terminal disconnected in step 1.

Check/Adjustment Location : main board

EFM soLder jumper terminal

RV505

oor~-i-L_I __ ...lI 0 0 oQ-

! Tracking Balance Adjustment!Conditions:The set should be placed either horizontally.Adjustment Procedure:

oscilloscper ~ ' " w rl e v iTP(TE) - : - - t : +TP(VC) ~-(See page 6.)1. Connect the oscilloscope to main board TP(TE).2. Put the set into service mode (See page 5,)3.' Press the ~ and ~ keys to move the opticl pick-up

block to the center.4. Insert the disc (YEDS-18) and close the top panel.5. Press the ~IIkey.

(It will go from focus search to focus on, and CLV )pull-in mode state. Tracking and sled are OFF.

6. Adjust RV503 so that the oscilloscope wavaform issymmetrical on the top and bottom in relation to OV.

Note: Take "-sw=ee"",---",-,,,,,,--,,",~~,-,,~=~=form .

. P J V \ A J TA= B A= B

7. Unplug the external power supply to stop spindle motorfrom rotating.

8. After adjustment, release service mode (see page 5).

Adjustment Location: main boardTP(TE) RV503

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IFocus Bias AdjustmentlConditions:The set should be placed either horizontally.Adjustment Procedure:

oscilloscope(DC range)~ ' : ' " i ~ 1 1P(RF)~TTP(VC) -(See page 6.)

oscilloscope(DC range)~ : i ~ 1P(FE) ~ ..TP(VC) -(See page 6.)

1. Put the set into service mode (See page 5).2. Connect the oscilloscope to main board test point

TP(RF).3. Press the I and ~ key to move the optical pick-up

block to the center.(Move the optical pick-up block tothe music area on the disc to enable easy visibility ofthe eye pattern).

4. Insert the disc (YEDS-18) and close the top panel.5. Press the.-II key.

(It will go from focus search to focus on, and CLV)pull-in mode state. Tracking and sled are OFF.6. Press the KEY-MODEbutton (Tracking and sled go ON.)7. Adjust RV504 so that the oscilloscope waveform eye

pattern is good. A good eye pattern means that thediamond shape (


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ReferenceIFocus/Tracking Gain AdjustmentlA frequency responce analyzer or CD jig is necessary inorder to perform this adjustment exactly.However, this gain has a margin, so even if it is slightlyoff, there is no problem. Therefore, do not perfrom this ad-justment.

Focus / tracking gain determines the pick cup followup(vertical' and horizontal) relative to mechanical noise andmetchnical shock when the 2-axis device operate.However, as these reciprocate, the adjustment is at the pointwhere both are satisfied. When gain is high, the noise when the Z-axis deviceoperates increases.

When gain is low, it is more susceptible to mechanicalshock and skipping occurs more easily.

This adjustment is to be performed when replacing thefollowing parts: UPF (optical pick-up block) RV501 (focus gain volume) RV50Z (tracking gain volume)

On this set. it is very difficult to simplify this adjustment.For those sets on which symptoms such as "occasionalskipping" are hard to discover. or it is hard to tell if theset has been repaired. use the CD jig and perform thisadjustment. Refer to the diagram below for connection ofthe CD jig. The adjustment procedure is described in theseparate CD jig Instruction Manual.Please be careful no to move RV501 (focus gain volume),RV502 (tracking gain volume) ordinarily.

CD jig connection: BR NRE DOR GYE LWHT

CD jig

Remove the solder jumpers at the TE and FE locations andconnect the CD jig.

"

RV502 RV501

o

o o o8--

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9-953-376-13

(Including 9-953-376-91 )with 9-953-376-819-953-376-82Sony CorporationGeneral Audio Group

English9210510-1 (3)Printed in Japan1989.11

Published by Customer Relations and Service Group-40-

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D2 Service Manual