Alpine CDA-7893R User manual

/MUNPINE
SERVICE MANUAL
FM/MW/LW/RDS CD Receiver
MP3
<<
DAB
ges
L AU
XT
CDA-78S9SR

<Cautions for Safe Repair Work>
The following cautions will prevent accidents in the workplace and will ensure safe products.
@The symbols indicate caution is needed to prevent injuries and damage to property.
The symbols and their meanings follow.
Ww . If you ignore this symbol and handle the product incorrectly or unsafely,
arming serious injury or death may result.
If you ignore this symbol and handle the product incorrectly or unsafely,
injury or only material damage may result.
Do not look squarely into the laser light
coming from the pickup.
You may loose you sight.
Do not allow wiring to be caught in the
screw/chassis.
If wiring is caught in the screw/chassis, it may cause
a short circuit, resulting in a fire.
High Temperature Caution
Touching the heat sink may cause severe burns.
Reverse Power Supply Connections or
Misconnections Caution
Reverse power supply connections or misconnections
may cause ignition problems and smoke may result.
Soldering Caution
Hot solder from solder splash may cause severe
Fuse Caution
Always use a designated fuse.
Use of an incorrect fuse may result in a fire.
Battery Caution
Use the designated battery.
Confirm the correct polarity and seat of the battery.
An incorrect battery or an improperly connected or
seated battery may result in a fire.
Designated Parts Caution
Look up the part fist and ensure that only designated
parts are used to prevent problems or accidents.
Wiring Caution
Ensure that the wiring is correct when rewiring to
prevent problems with ignition/breakdown.
Wear Gloves
Wear gloves to prevent electrical shocks or injury
from the end face of the metal.

CDA-7893R
Contents
Packing Assembly: Parts List < <s.ccavec ce. seseescsicesscseusedontiseies tdevats ceciseth dens Ndeevereaaidenscinia eter. 4
PACKING Method VIOW © <icscsscecsedecsnsssecduieeseteeteassetesseeeesubacedsdedaed outst ecdenctdvevosea Suaasevustovedevsesceeveutiaxsstaeate 4
SP@CIPICATIONS. <assvoceten ctor ovesds zene s'secebueh stad aavecdavetagueees seebee svastasievsbleresysscttsssisatvaadesieascedehectdnctete medians 5,6
ACjUSIMENE PrOCEAUIeS:: véleczlesecsdeeneaec cae ticatvavadleceetecac¥iwaveicbiusteceteieiteauctaess dacedeciepcugdi edasessveeavasecesens 7,8
EXtEMSION:CADle® <a cccsseceecced Sodus cdastvassecdun cea sisneat ond ios Wucdes ccctvanecatddeaaduneceadedeecweduaaatacdescasaseavaeeapavassancke 9
BIOCK-DIAGramy -veclecessccessecieeick ecscetiavcostiaate elsaaes caesne cis tesssenzuada cde cash staacetcvseidereasscdebes ode saausdbeausvtite 10
Parts Layout on P.W.Boards and Wiring Diagram oo... eeesseeeeeseneeeeeseeseeteeseaeeeseeseeeeeseneesnaes 11~18
Schematic Diagram sevsdessecssccesheceewe ce sleacciaeseisteacachdes saps sets stenieneitaosedesudedasravebddabesssntvecesenacensee 19~30
Terminal: Voltage sot I C/TR. sssscasteccesssvsusscecaccedecceceaenchesauvcs vidvebsouen lucnccutdasiensses desgebtececensdiasessee> 31~39
Description of IC Terminal oo... eeeeeesecssecsneceseeseneeesneecaaesseeseesesaeseneseseesaceceaeseaceeesenseseeaaeenees 40~44
Electrical’ Partsslist: citecccscedeodcoatasececesssnsecesecsetcaseus veins ds due ceeviecedeneneuvedgueacasaleacateseuanecessanvevtesaetss 45~57
CabinetAssembly Parts List. - santinaindaiichiianititiconiiihnl anda eS ninlien aes 58
Exploded View (Cabinet) — .........sccecssscsccsssceseceseseesecnesesensersoescesenescesssseesaernsestsceneneraesnasenarsuenss 59~62
Exploded View (CD Deck Mechanism) (DP23S2CO) oo. cscessecstsecseecneeeeeceeeeetaeeaeeeeaeeseees 63, 64
CD Deck Mechanism Assembly Parts List oo... ccecesseceeeeessneecesesneeeessesseseeseaaeeeeesssesseseesesees 65
NOTE : Due to continuing product improvement, specifications and designs are subject to
change without notice.

CDA-7893R
Packing Assembly Parts List
- Ss F13. [SCR,MCH M5X8 FLAT 202
SCR,WAVE M1.7X4 203
204
205
01T35536Y01 ASSY,WIRE ISO 65R
15D00529K02. = JCASE,INNER
15D01798K01 CARRYING,CASE
68P01434K93 |O/M AOEU AODN
01745518Y01 ASSY,REMOCON RUE4187
BAT,MGN R03(NB)UM-4
CAP,RUBBER(A)
BOLT,HEX.M5(A)
36A11113W01
03A11112W01
01T15394Y02 ANT,JASO-ISO

CDA-7893R
Specifications
<FM RADIO>
Intermediate: Frequency: cecdecctiscssszeva.ckcceasveshsed ice cosbedstaccateadesdedeseeduccenedundssssuaecovevtecasenceccangersbinageegiaeds sey 10.7+0.1MHz
Frequency Ranges. z.sccs:cscssccustexcdeetdexsceseeito ss cue ciaas dey Goes vaceapesestcucasdeuss dudes Sucputeasvesedecssvetsicabvegs cnsasvusspacen sed 87.5~108MHz
Usable Sensitivity (Mono, 30dB S/N, at 98.1MHZ) ou... eee ceereeeterteeeeenserssersenensnssensesensssasaueerersaneeas 20.2dBf
-3dB Limiting Sensitivity (at 98. 1MHZ) oo... eee eeeneeceeesestsscneeeeneensserecseceteeesesenensusesaasessscauaetaesessetaseeseeeeeaees 21.20Bf
Residual Noise (Ref. 400Hz (NARROW), at 98.1MHZ) oo. eeeeeeeeerseecerarerenssueesereusneassasesuseesesaueaeeees 28+10dB
S/N Ratio (at'98:4MHZ)> - sercssisectsat cas tecac ck shacatee cee cdahcunees Docnevscutbet akeats yede seuss etpate cucee deg bevevuavoayedesdadeeyeeas vane Stereo : 55dB
Mono : 58dB
Image Rejection (at 106.1MHZ) ....ccesssscsssssssessssseneessesscsenesscseessecaeeesssseesensenecassesecsesesseseesessesecseceeseeseenenenteneetens 40dB
IF: Bejection:(at-90:1MZ)) wish iil de diacieseiaivaltetaictene eit vacate an iain nce dentin aeaes 60dB
Distortion (Input GOUBU, at 98.1MHZ) oo. cece secsesseesesesescessereeesseesssereesesessesaueeusensucssceucaessesaesaesoeseesaeonesatentenes 1%
Frequency Response (Ref. 400HZ, at 98.1MHZ) .....ccissssesssessssetsessrsssssscssceseecsseaescessaceseessseneetensianes 100Hz : 0+3dB
10kHz : -10+3dB
Stereo Separation (1KHZ, at 98.1MHZ) oo... cceeeseccseseeeeseserseseseesecseseesesensececsetevseeusecsesevsnsaesersesavaetassavaeeereesavats 20dB
PS Sensitivity (At 9B21MHZ).. «scisccsesescacdesiidvcietssvevetocevenecnsstucetdesensrestustectescovcedeadeslesseartetseneonanensesten sduevedaaenctorente 36.2d0Bf
<MW RADIO>
Intermediate: Frequency «.c..iccs.fececisnsivenedehi sia cal duce aves cceivatesch Succ sideetetuusutsdeadescevnesscveeedvaveubodevetvvecesetees 1st. : 10.7MHz
2nd. : 450kHz
Frequency Range ccscccscsscsssssessssssscsssesssscsesecssscsansssssesssesesssscsssesesessessesesesacaessarsenessssseseeerersssnseseses 531~1,602kHz
Usable Sensitivity (20dB S/N, at S99KHZ) once cess seteeesesscsecsceseessseescseseseessseesessseesseaesaneeaseesesseseeserseseseneesns 36dB
S/N Ratio (at QOQKHZ) oe. eeeeseesesseseseescsssssssscauscsesecscsesecssscscassesasecscscassasensssssenevasesssseaeseneeasarsearersasscsseesasseeresaeaes 44dB
Image Rejection (at 1,404KHZ) on... cecesssesssesesenseseeeessensssesesesenecesseseaeseuenensesesscanecsesenenensersnsasnenenessesessesesseeeaeses 50dB
IF Rejection (at GOSKHZ) oes eesesesssssssesscscsessscserseecasscsvsssesaueesssssesaneuesscseneseesessesssenestesesesssensassaneseesseseneseses 60dB
Distortion:(@U999KHZ) nccccecdcantebeencsnscsasevaseoncagsesesessacoctsasucnsevtanncssacoiacdeudeaedseusadeccedastapevacoesodessuacsuadgtavivteasedsuweesdse 1.5%
Frequency Response (Ref. 400HZ, at QOQKHZ) .....sessccseseeseeesenseeenesenecsesecseeeceeeecaseeeessenseaesasasercasetens 100Hz : -3+4dB
2.5kHz : -5+3, -5dB
<LW RADIO>
IMtermediate Frequency oo... cecccececsecsssessssansssssecsseesseesessssssesseeaeessesseeesssaeeseesseessessseseseesniesatensesssenneeaeengs 1st. : 10.7MHz
2nd. : 450kHz
Frequency RAMGe .seescecsssssssscseseesersesssecseceessesseecsensssecenseseeseseneeseneeesaenenssneessnesssnenaseenesteneneneniaaeneseeeeees 153~281kHz
Usable Sensitivity (20dB S/N, at 216KHZ) oo... ccc eeccscseseseeeeeeesesseeneneeseeecaseeneessessssasissessesesessensecesasinaeesseneete® 42dB
S/N: Ratio: (at-Q1GkHZ): « sc.:ccessscesndeedecccsdssteecdashsscuteesecess esses dteedasuaee davstated obtain eactivn ining rdahesaniediss tase 44c0B
Irmage Rejection (at 270KHZ) oo. see eecsesessescsesesenecseseeessecanenecsesesesseseeescsesesesecsesesesesesssecsesessusseereesseseeeesseseneseees 50dB
IF Rejection (at 162KHZ) ...ceescscsessssssssssessseseeseseessscseenscsesecsessessecaseassesnessesessesseseensessenssssesssneseeseseseneseeeneaeeseeessas 60dB
Distortion:(at'21GkHZ) sccuteiesdectees ote. taeltest cored in eae ndiav adh cistaenaden iin aan etetans behoaee ate stodtees 1.5%
Frequency Response (Ref. 400HZ, at 216KHZ) .......ecccesessssseescseseseseseseeecseessesseeeacsnseaseesteseeeesssanaeens 100HzZ : -3+4dB
2.5kHz : -5+3, -5dB

CDA-7893R
<CD SECTION>
SV SUSI isint ote leec asin Gab caess esses cee we ee tan pase ese NG tataan ha chad cuattoeeatesetiats raattendees Optical (Compact Disc System)
Channel Balance (1kHz, CD : TCD-782, MP3 : SCD-4419 (FOLDER4-128kbps)) cece ccc ecssecseeseesreeneeenes 0+3dB
Distortion (1kHz, CD : TCD-782, MP3 : SCD-4419 (FOLDER4-128kbps)) oo... ec seecsesseeseescneteerersnteseseeeaseetanens 0.3%
Frequency Response (Ref. 1KHZ) 0... ssccsssesessesssesesesssanenseeecsseseesessecaecasceeseessessensesnesseeseegs TCD-782 : 17Hz : 0+3dB
127Hz : 022dB
10.007kHz : 022dB
19.997kHz : -2+4dB
SCD-4419 (FOLDER4-128kbps) : 17Hz : 0+3dB
127Hz : 0+2dB
10.007kHz : 0+2dB
19.997kHz : -2+4dB
SS/NIRRAUIOS caches esse hecGHis iti hee Tectecbaa ds seed cate cen iRiet nav edcnsbnas ous bbocees sO ceberwivacecees dade cuseccesessdauenteabesasoteeesentey TCD-782 : 80dB
SCD-4419 (FOLDER4-128kbps) : 80dB
Separation -cgsccevetssdags snsscdenscusssaessesbecgvetcauceucdencaseetsadentveausdowsttus cas ankde ay sduigetbay uleadesteshsdetegienaiaghvabeavieens TCD-782 : 55dB
SCD-4419 (FOLDER4-128kbps) : 55dB
De-Emphasis (Ref. VKH Z). esccvecscd.cciseccavsicecsevectsnsaniscuseverstedecaeunaiocstsecesteserntsuseseesouecsoneterees TCD-782 : 4kHz : -2043dB
16kHz : -20+3dB
<Pickup>
Wave LONG ths scsvcctpacseccaceed is bseteesscssaSeceectuckgesdvbnesouaas danatagind vives aevivnsseeliGasuioaes op iaedes neseoee ieee sievaneaaanea seats 795nm
LaSOr ROWS: _cccd. oilaveeeadeiecs ens aawdeciase ech sccadenecutesevebantenestetcascuatsted peags onddesatuspaseaacstdassancdsaqazsetecqsneaddacnatestengeeeys CLASS I
< GENERAL>
POWeEr-SUPDIy = o/c. lectisdeiscibedawessvetsaserees atestecenneveuseasecsdeeasdetuescsucaceuennsdiandsovedeunstetestelouViebagunsdsvapsucaseteeoepssuainonaviead DC14.4V
Power Output (TCD-782 (OdB, 1kHz), T.H.D. 10%) /IMpedance oo... ececcccsseseeeseseesssenesseserenteteseens 25W/ch/4ohm
Pre Output (TCD-782 (0dB, 1kHz), T.H.D. 1%) /Impedance —......eeeeeeees FRONT, REAR : 2V+2.5dBV/ch/10k ohm
SUB-W (SUB-W STEP +15) : 4V+2.5dBV/ch/10k ohm
Dimensions. (WXHXB). cesccccieesnceiiisctscseteoeercaessessestedengearscasabvanetenbevistecssosadas oorsnadsevesensd Chassis : 178X50X158mm
Nose Closed : 18858 X25.8mm
Nose Opened : 188X58X52.3mm
Weight cesta ceus tee sads echo cee inne ad ARES Sateen ad Sead an dee M Rast ch tole Ae ie eee tiated 1.5kg
NOTE : Due to Continuing product improvement, specifications and designs are subject to change without notice.

CDA-7893R
Adjustment Procedures
1. FM/AM SECTION
(1) Dummy Antenna Circuit
| 10ohm 450hm_—s
1
Input | 60ohm ' Output
ue aes,
For 50 ohm FM Signal Generator Figure 1
; 300hm 15pF
| t
Input | 65pF 'Output
(ee Sec oe aD
For 50 ohm AM Signal Generator Figure 2
(2) Connections
Antenna Receptacle AC VTVM
FM Dummy
Antenna
FM Signal Generator Unit Under Test yy, .
: Figure 3
GND short for 2~3 sec.
Antenna Receptacle AC VTVM
AM Dummy
Antenna
AM Signal Generator Unit Under Test sy, ;
‘ Figure 4
GND short for 2~3 sec.
(3) Control Settings
Power SWitch oo. eeeeeeecnereetesetseeneenenees ON Band Switch oe FM/AM (MW/LW)
Fader Control Center Position Non Effect
Balance Control! Center Position Non Effect
Treble Control Center Position «=«§ OtNerS ee ecccescsccssssceseesvensnsrecseeees OFF
Bass Control .......ceceseeseeseeserees Center Position

CDA-7893R
(4) Adjustment Procedures
Step
Test Point /
Description | Connection Signal Generator | Dial Control| P.W.Board Adjustment
Coordinates
: TP004 Auto Adjustment :
ike Meter 87.5MHz, 26dBy (1-D) After setting up of Signal Genarator,
se Figure 3 ; : 87.5MHz short GND and TP511 (Pull-Down)
Adjustment (Mod. OFF) TP511
EM for 2~3 seconds.
(FM)
(2-B)
(SPEC)
1.520.1V
. TP004 Auto Adjustment :
rel Matar 999kH2, 34dBy (1-D) After setting up of Signal Genarator,
” Figure 4 ; 999kHz short GND and TP511 (Pull-Down)
Adjustment (Mod. OFF) TP511
MW for 2~3 seconds.
(MW) (2-B) (SPEC) 1.020.1V
: TP004 Auto Adjustment :
ee
Meter
ot6Kttz,
34dBy
(1-D)
After
setting
up
of
Signal
Genarator,
Figure 4 ; 216kHz short GND and TP511 (Pull-Down)
Adjustment (Mod. OFF) TP511
ow for 2~3 seconds.
(LW) (2-B) (SPEC) 1.030.1V
wate.

CDA-7893R
Extension Cable
@ When repairing or measuring the voltage of this unit, connect with the Extension Cable as shown in below.
CD Deck Mechanism
WSS eension Gable
(01E29154S01)
Q
Main P.W.Board

CDA-7893R
Block Diagram
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