Panasonic SL-CT700GD User manual

AD0212161C3
PortableCD Player
SL-CT700GD/ SL-CT700GK
Colours
(A)...................BlueType
(R)...................RedType
(S)...................SilverType
(W)..................White Type
SPECIFICATIONS
1

1. Accessories
-ACadaptorforSL-CT700GD
(N0JCCE000005)..........................................1pc.
-ACadaptorforSL-CT700GK
(N0JCCE000001)..........................................1pc.
-Stereoearphones
(L0BAB0000170)...........................................1pc.
-Wiredremote control
(N2QCBD000028).........................................1pc.
-External batterycase
(RFA1821-H)..................................................1pc.
-Rechargeablebatteries (withcase)
(RP-BP61GY-S).............................................2pcs.
-Soft case
2

(RFC0071-H)..................................................1pc.
2. Location of Controlsand Connection toOther
Equipment
3. Precaution of LaserDiode
Caution:
Thisproduct utilizes alaserdiodewiththeunitturnedon, invisible
laserradiation isemittedfromthepick-up lens.
Wavelength:780 nm
Maximumoutputradiation powerfrompick-up:100 W/VDE
Laserradiation fromthepick-up lensissafetylevel, butbesurethe
followings:
1. Donotdisassembletheoptical pick-up unit, since radiation from
exposedlaserdiodeisdangerous.
2. Donotadjust thevariableresistoron thepick-up unit. Itwas
alreadyadjusted.
3. Donotlookat thefocuslensusing optical instruments.
4. Recommend nottolookat pick-up lensforalong time.
4. Handling Precautions forTraverse Deck
Thelaserdiodeinthetraverse deck (optical pick-up)may break downduetopotential difference
causedbystaticelectricityofclothes or humanbody.
So, becareful ofelectrostaticbreakdownduring repairofthetraverse deck (optical pick-up).
4.1. Handling oftraverse deck (optical pick-up)
1. Donotsubject theoptical pick-up tostaticelectricityas itis
extremelysensitivetoelectrical shock.
2. To protect thelaserdiodeagainst electrostaticbreakdown, be
surethat theshortland oftheflexibleboard(FFCboard)shouldbe
short-circuitbysolderbeforeinserting ashortpinorsimilarobject
intothetipoftheflexibleboard. / (Referto Fig. 4-1. )
3. Take carenottoapplyexcessivestress totheflexibleboard(FFC
board).
4. Donotturnthevariableresistor(laserpoweradjustment). Ithas
alreadybeenadjusted. (Referto Fig. 4-1. )
3

Fig. 4-1.
4.2. Caution whenreplacing traverse deck
Thetraverse deck short-circuitsthefoil (B) toprotectthelaserdiodeagainstelectrostatic
breakdown. Besuretocutthefoil (B) beforemaking connection. Take carenottomake contact
withcutting pointeachother. (Referto Fig. 4-1. )
4.3. Grounding forelectrostaticbreakdownprevention
4.3.1. Humanbodygrounding
Use theanti-staticwriststraptodischargethestaticelectricityfrom your body. (Referto Fig. 4-2.
)
Fig. 4-2.
4.3.2. Worktablegrounding
Putaconductive material (sheet) or steel sheeton thearea wherethetraverse deck (optical pick-
up)isplaced, and ground thesheet. (Referto Fig. 4-3. )
Fig. 4-3.
4

Caution:
Thestaticelectricityofyourclothes will notbegroundedthrough
thewrist strap.
Sotake carenottolet yourclothes touchthetraverse deck (optical
pick-up).
5. Operation Checks and Component Replacement /
Procedures
-Thissection describes procedures forchecking theoperation of
themajorprintedcircuitboardsand replacing themain
components.
-Forreassemblyafteroperation checks orreplacement, reverse the
respectiveprocedures. Special reassemblyprocedures are
describedonlywhenrequired.
5.1. Checking forthemainP.C.B.
5.1.1. Checking for themainP.C.B. (A side)
5

-Check themainP.C.B. (Aside) as shownbelow.
5.1.2. Checking for themainP.C.B. (B side)
-Follow the(Step1) -(Step5) ofitem5.1.1.
6

-Check themainP.C.B. (Bside) as shownbelow.
7

5.2. ReplacementfortheCD lidunit, shaft and axleholeboard
8

5.3. Replacementforthetraverse motorand optical pick-up
-Follow the(Step1) -(Step4) ofitem5.1.1.
9

10

5.4. Replacementfortherest switch
-Follow the(Step1) -(Step4) ofitem5.1.1.
-Follow the(Step1) , (Step2) ofitem5.3.
6. Displayof Self-DiagnosticFunction
Thisunit(SL-CT700)has self-diagnosticfunction. Itmay display below-mentionedon theremote
control display.
-Thesubstance ofself-diagnosticdisplay.
Remote control display
(Press PLAYand STOPbutton. After15 seconds, itisdisplayedfor
2seconds.)
Incase ofthisdisplay, itmay becausing for abnormallymovementsoftraverse deck, touching
failureofRESTdetectswitchand coming off or cutting off theflexibleP.C.B.. Itisnecessaryfor
confirmation or repairand replacementeachparts.
7. Checking the Operation Problemson the Traverse
Deck (Optical Pick-up)
Make suretofollowtheprocedures belowtocheck theoperation problemsofthetraverse deck
11

(optical pick-up)beforereplacing it.
Replace thetraverse deck onlyaftertheproblem isidentified.
7.1. Check theoperationsdescribedbelow on thetraverse deck after
replacing
7.1.1. Checking skipsearch
1. Playanordinarymusical programdisc.
2. Press theskipbutton tocheck fornormal skipsearchoperation
(inboththeforwardand reverse directions).
7.1.2. Checking manual search
1. Playanordinarymusical programdisc.
2. Press themanual searchbutton tocheck forsmoothmanual
searchoperation at eitherlow orhigh speed(inboththeforward
and reverse directions).
12

7.1.3. Checking playability
1. Playthe0.7mm black dotand the0.7mm wedgeon theplayability
test disc (SZZP1054C)and verifythat no sound skipornoise
occurs.
2. Playthemiddletracks oftheuneventest disc (SZZP1056C)and
verifythat no sound skipornoise occurs.
8. AutomaticAdjustment ResultsDisplayFunction /
(Self-Check Function)
Ontheunit(SL-CT700), eachautomaticadjustmentresultaredisplayedon theremotecontrol
display. Thisfunction isconvenienttocheck or identifywhichautomaticadjustmentcircuitis
incorrect.
Thefollowingsarethecontentsoftheautomaticadjustmentresultdisplays (Self-Check
Function).
8.1. How todisplayautomaticadjustmentresults
1. Loadthetest disc (SZZP1054C).
2. Press the (SKIP/SEARCH)and (SKIP/SEARCH)
buttonssimultaneouslyand holdthem, and additionallypress the
(PLAY/PAUSE)button.
3. Press the (STOP/OPROFF)button once.
4. Anautomaticadjustmentresultisdisplayedon theremote control
display.
8.2. Displayofautomaticadjustmentresults (Self-Check Function)
13

<Example>
FollowthebelowstepswhenE-1isdisplayed.
(Cause:Focusbalance (FBC) issetbeyond thelimit.)
-Check if
1. thewaveform orvoltageofthefocusservocircuitiscorrect, and
2. theoptical pick-up returnstothenormal state byexchanging the
traverse deck.
FollowthebelowstepswhenE-4isdisplayed.
(Cause:Focusgain(FGC) issetbeyond thelimit.)
-Check if
1. thewaveform orvoltageofthefocusservocircuitiscorrect,
2. thefocuscoil oftheoptical pick-up iscorrect (around 8ohms),
and
3. theoptical pick-up returnstothenormal state byexchanging the
traverse deck.
FollowthebelowstepswhenE-Fisdisplayed.
(Cause:All adjustments(TGC, FGC, TBC, FBC) aresetbeyond thelimit.)
-Check if
1. theoptical pick-up returnstothenormal state byexchanging the
traverse deck, and
2. thewaveform orvoltageoftheservoICsarecorrect.
Note:
Itisnotalways necessarytoexchangethetraverse deck whenanerror messageisdisplayed.
Besuretocheck ifthecircuitisdefective or notbeforeexchanging thetraverse deck.
Note:
14

Ifanyotherdisc thanthetestdisc (SZZP1054C) isused, anerror messagemay bedisplayed.
Thisisnotamalfunction.
9. Type Illustration of ICs, Transistorsand Diodes
10. SchematicDiagramNotes
-Thisschematicdiagrammaybemodifiedat anytimewiththe
developmentofnew technology.
Notes:
S201:
LaserON/OFF switchinONposition / (ItturnsONwithdisc holder
closed.)
S202:
Rest detectorswitchinOFF position / (ItturnsONwhenoptical
pick-up comes toinnermost periphery.)
S301:
Play/pause ( )switch
S302:
Stop/operation off ( )switch
S303:
R.skip/search( )switch
S304:
Volumecontrol switch(VOL+)
S305:
Volumecontrol switch(VOL-)
S308:
F.skip/search( )switch
S310:
Hold(HOLD)switchinOFF position
-Importantsafetynotice:
15

Components identifiedbymarkhavespecial characteristics
importantforsafety.
Furthermore, special parts whichhavepurposes offire-retardant
(resistors), high-qualitysound (capacitors), low-noise (resistors),
etc. areused.
Whenreplacing anyofcomponents, besuretouse only
manufacturer’sspecifiedparts shownintheparts list.
-Thesupplypartnumberisdescribedaloneinthereplacementparts
list.
-Voltageand signal line
:Positivevoltageline
:Playback signal line
-Thevoltagevalues and waveformsarethereference voltageofthis
measuredbytheDC electronicvoltmeter(high impedance) and
oscilloscopeon thebasisofGND terminal (DC INjack).
Accordingly, theremayarise someerrorsinthevoltagevaluesand
waveformsdepending upon theinternal impedance ofthetesteror
measuring unit.
Measurementconditions:
-ACadaptorisusedforpowersupply.
-Set theholdswitchtoON.
-Theparenthesizedisthevoltagefortest disc (1 kHz, L+R, 0dB)in
playmode, and theother, forno disc instop mode.
Caution!
ICand LSI aresensitivetostaticelectricity.
Secondarytroublecanbepreventedbytaking careduring repair.
Covertheparts boxes madeofplastics withaluminumfoil.
Ground thesoldering iron.
Putaconductivemat on theworktable.
DonottouchthelegsofICorLSI withthefingersdirectly.
11. SchematicDiagram
16

12. Printed Circuit Boardand Wiring Connection
Diagram
13. Block Diagram
14. Terminal Function of ICs
14.1. IC101(AN8885SBE1V):/ ServoAmplifier
Pin
No.Terminal Name I/O Function
1PDE I Tracking signal input(1)terminal
2PDF I Tracking signal input(2)terminal
3VDD IPowersupplyterminal
4PDA I Focussignal input(1)terminal
5PDB I Focussignal input(2)terminal
6LPD - Notused, open
7LD - Notused, open
8RF O RFaddition outputterminal
9RFIN I RFdetection signal input
terminal
10 CSBRT I ConnectedtoVDD through
capacitor
11 CEA I ConnectedtoVDD through
capacitor
12 BDO O Dropoutsignal outputterminal
13 LDON I LaserONsignal inputterminal
14 GND - GND
15 /RFDET O RFdetection signal output
terminal
16 PDOWN O Reducedvoltagedetection
signal output
17 OFTR O Off-track signal outputterminal
18 DEFLVL I Laserintermittentdrive ON/OFF
input
19 ENV O RFenvelopesignal output
terminal
20 GCTL I Inputfor CD-RW
21 EQSW I EQcharacteristicdrive signal
input
22 TEIN I Tracking error amplifierinput
terminal
23 TEOUT O Tracking error amplifieroutput
terminal
17

Pin
No.Terminal Name I/O Function
24 FEOUT O Focuserror amplifieroutput
terminal
25 FEIN I Focuserror amplifierinput
terminal
26 VREF O Reference voltageoutput
terminal
27 TBAL I Tracking balance signal input
terminal
28 FBAL I Focusbalance signal input
terminal
14.2. IC301(C2BBGE000661):/ SystemControl
Pin
No.Terminal Name I/O Function
1REMKEY I Remotecontrol key signal input
2DOCTOR IConnectedtopowersupply
though resistor
3VMONI/
TOR2 I Batteryremaining measurement
signal
4VMONI/
TOR1 I Rechargeablebatteryvoltage
signal input
5VMONI/
TOR3 IExternal batteryremaining
measurementsignal
6KEY2 I Operation key signal input
7KEY1
8OPEN I CD coveropendetectsignal
input
9CHARGE1 OCharging ONsignal output
10 BUZ O Buzzercontrol outputterminal
11 FG I Pulse inputterminal for spindle
motor rotating measurement
12 DOT O Communication signal output
for LCD driver/Remotecontrol
poweroff output
13 MUTELD O Laserintermittentdrive ON/OFF
output
14 ECS O EEPROMcommunication signal
output
15 LED/
CLOCK O Clock signal outputfor LEDdrive
16 PLAY I PLAYkey signal input
17 MLD O Serial command latchoutput
18 MCLK O Serial command clock output/
EEPROMclock signal output
18

Pin
No.Terminal Name I/O Function
19 MDATA O Serial command dataoutput/
EEPROMdatasignal input/output
20 STAT I Statussignal input
21 BLKCK I Sub codeblock clock signal
input
22 MUTEA/
/ LDATA ODatasignal outputfor LEDdrive
23 LD-OFF O LDcurrentdrive OFF signal
output
24 TYPESEL INotused, connectedtoGND via
resistor
25 /RESET I Resetdetectsignal input
26 EXT-IN I Oscillator connectedterminal (F=
32.7kHz)
27 EXT-
OUT O
28 XOSCIN I System clock signal
29XOSCOUT O
30 VSS -GND
31 REST I Restdetectswitchsignal input
32 JACKM2 I Lineoutconnection detect
signal input
33 JACKM1 I Lineoutconnection detect
signal input
34 ICTRL O External batterycurrentcontrol
output
35 LIMIT - Notused, open
36TXPOWER OOptical outputONsignal output
37 POWER O Powersupplydetectsignal
output
38 MUTEH O Headphoneampmuting signal
output
39 PDOWN I HeadamppowerOFF signal input
40 MUTEL O Lineoutmuting signal output
41 PC2 O Driver(3ch)OFF signal output
42 PC1 O Driver(1ch)OFF signal output
43 RW O Outputfor CD-RW
44 JUDGE/
/ XBS O Unitinspection OK/XBS ON
signal output
45 X2 O RFequalizertwice speedsignal
output
46 LED O LEDfor rechargeablebattery
signal output
47 X3SELCD - Notused, open
48KANASEL -Notused, open
19

Pin
No.Terminal Name I/O Function
49 CHGSEL - Notused, open
50 PMSEL2 - Notused, open
51 PMSEL - Notused, open
52 DUMMY O Dummyloadsignal output
53 X3SEL - Notused, open
54 TYPSEL3 -Notused, open
55 TYPSEL2 -Notused, connectedtoVCC
56 A.S.SEL - Notused, connectedtoGND
57 ASHOCK - Notused, connectedtoGND
58 HOLD I HOLDswitchsignal input
59
|
70
SEG11
|
SEG0
- Notused, open
71 VCC IPowersupplyterminal
72 VREF I Reference voltageinputterminal
73 AVSS -GND
74
|
77
COM3
|
COM0
- Notused, open
78 VL3 - Notused, open
79 VL2 - Notused, open
80 VL1 - Notused, open
14.3. IC401(C0GBF0000017):/ 4chMotorDrive
20