Alpine CDA-7832R User manual

JUUN_PINE.
SERVICE
MANUAL
COMPACT
FM/MW/LW/RDS
Compact
Disc
Receiver
DIGITAL AUDIO
@
For
the
CD
player
mechanism
parts
(DP24L010)
of
this
model,
refer
to
the
Service
Manual
*
DP-L
Series
(Part
No.
68E23246S01).
FeDACZSSerR

CDA-7832R
Contents
Packing: Assembly Parts List ....c0: 0c c.scsssstecsatsscscecsescesssert casuecctactossncansceetedasosegtesadsesdalsseitvatewtasdoatuenye aeuuisdecsscdicesiaents 3
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Specifications ..........ccceseereneeens ao Scubadiiietucsu ts vaa puna patassaesidetedastecds davede deusanvbenns uacatie case ane cuvieas velvuretechaeteseases 4to5
Servo MOmnitor cies 2. 25255 o5 cae ssisssseaaos ees adie hb ca Sept bel Sw es as eta ab ee 6 to 8
Adjustment: ProCOduress 3,.2.5c5ccicacdiececevcvuescecacau.platecoosecedeudeugeeveada udev ens cacdbecaceubedisvengévecc¥esdcheciesisdesdiedevedivossaeesa 9 to 10
AGjUStMeRIt LOCATIONS i. sccses sccscvises sacanssuvscestesteusesceesteunes secbecsiysitenteduesstvanescs savesavaecddssdedasdavsdecausuncansieeerdgeansansdeskestaedis 11
Description of IC Terminal: ca. 6: ccs. et cccscsivsceachendsac3acstedestaeavandecdvedeteubbebestasitalGastaaVondoeatudcadgesiowdeloGladesseedinsee 12 to 15
LED ‘Display siisssise icine te keh se Retina tinned edte eats take thiew tite soos te daeee tn daiveaairne nn eaie shasginnn intense 16
Block: Dieegralintiie) cz. sacs ciccicn ses Gaeaecececbec ease ose aes Ro ttoeish eta tu othuaeeiehe and ated ba ta tabees dag adende vais acetone abeveniSiuceres aa teeta ees 17
Tuner Schematic: Diagram ss ccieii cccescecevicedicssnacesiciee davleesvavisetedvedsdaecdoveds dues vaegoia ssteisssaiadadadiaesvrdvvaieiseeYeaivvisetssdedeat cass 18
Parts Layout on P.C. Boards and Wiring Diagram (1/4) 00.0... cesccscesseneesssscssesneesecesseceesessecsesreesecesesensesaees 19 to 20
Parts Layout on P.C. Boards and Wiring Diagram (2/4) .00.....eececcseecesecseesseesseseceseeensesnsesseeseesateeaeseaeaeeees 21 to 22
Parts Layout on P.C. Boards and Wiring Diagram (3/4) .0.......ccccesesseessseesecsseesavcsecsaeeesesseeseeecaeeesseaeesueeseeees 23 to 24
Parts Layout on P.C. Boards and Wiring Diagram (4/4) 000... cccccccsecsccssesssceseececsecesescsesseseaaecaesessesseeeneeseeees 25 to 26
Schematic: Dig gran. 1/5) s.cccecesses cee sesbesca ea ccacepedecascecteads doses cds thadec das dabungavevaeesusds shatetaetedsessioeseaeiedesdeesiwiveees 27 to 29
Schoertiatic: Diagram (2/5) i s.5cce05e secede REG skk ais send vesis cnt woveiea ds tesaghen thease deubeuieccuv es Mae easeeesbee eats 30 to 32
Schematic Diagrar:(3/5) a:cs:cc.cceccsedevsees ee decdenci deca vedasdiaiasaacd ech cs nde cdecastugs coudedsaedesTavsntesiensieaueigeededvuuaiovendeees 33 to 35
Schematic Diagram (4/5).........ccscccscsscesscscsesesesssssscsnecssersscesssarercessesacensteseuseenenesseeusesesteustcassaueusracseecaveneeraees 36 to 38
Schematic Diagram (5/5) chad dgtbvwaRevaslgensas suacendse been facsusees@eeessecbetadavenasassesgutoenetiasaelua leuager veins jlitteteiSeate dee aanimeate 39 to 41
Eléctrical: Parts Uist): :isi.cedecccieasiedestescesduecd eiteeaind Beta iat atete eee waleae sane ates ft oa nee ested Bostic Sedat eco 42 to 52
Exploded View (Cabimet).c.vcasssicnisitecaistsctscassssbaven spears ocenestovs sedequedtervassty eGucous Oeeaterane iui slaasdveveeesbaqehsatgveeeureleds 53 to 54
Cabinet: Assembly Parts List. ..c.cccccccseciescicccstescecug caetedecsteessusdedes aeviss ewssddeniucaadece, Seacigauenssevendvueunanerseapeeastevseetcalove ates 55
Disassembly INStructions :iciscc.ccscccseevsesaatieseedsvcnssuysiiescoeteyie oyidesoesaweldnesei sted idbesi¥a clacedsbasnsadseeasbtdustecaseusasasescnseiavedies 56
Semiconductor Lead Identifications .......... cee cecsscesseeceseeceseeccessecsaesesseesesseessaeenscesseecssececaesecsescesssenseuesueessesenes 57 to 58

CDA-7832R
Packing Assembly Parts List
No. No.
3 iz
Screw, Countersink (M5X8)
Part No.
60S70585F01
03S72235F13
46A42363F01
36A11113W01
03A11112W01
Stud, Bolt
01T75363W01
68P81384W46
68P81384W48
15D50406W01
15D60773W01
ISOMASO Antenna Adapter
Owner's Manual
Owner's Manual (I/G/S)
Case, Inner
Carrying, Case
01T85297W01
01T75235W05
, ISO Wire
.. Card Remocon

CDA-7832R |
Specifications
CD SECTION
SYStOmn:
©
ssececcisvasedesiennseuidy
reba
cd.
ocavavectn
epee
abd
eaceaticeannaredanaceasstaee
naar
ectapsace
te
shes
ane
tieteete
Optical
(Compact
Disc
system)
Quantizing
Bit
NUMDbOr
oes
eseseseeesesesesenenseseesencnesnsaneceseeeseneeneesaseenesenesenessueasenessesnssntes
16bit
Linear
system
RNa IS eset soc ccevea i ceeths cas ae ees ek ce ecaan de bzec danse edesaalidts seen cccdeadbes Ha tadescectaben stale teastitbactsiaus socerte seeatascves sa tots 2 Channels
ChanrieliBalance:(1KHZ):
isscsdiccctinictescek
ndecccateasecdh
sige.
cidblasesduecsptiedeesatesesacessteasea
oascaeveavectecbenssesitettantetiaeeas
tones
0+3dB
Distortion (1KHZ) ....eccsseeesesseseceessesssssestsssscsssusescececssssavsseseeosseenssssesssseseasssatnensssenecusasaseneseseaeseeaceaseasarersasnserereesniess 0.1%
Frequency
Response
(Ref.1KHZ)
oo...
cssesessessesscssesesesessessescessseessenersnenensnsnessaeseeseeenegaaeeseuesesessssseaanans
17Hz
:
043dB
127Hz : 0+2dB
10.007kHz : 0+2dB
19.997kHz : 0+4dB
GIN
Ratio
(1KHZ)
on...
eseecssecseeseceesesseerssessssvsstsssesesusseccessssssseuseaccuesceuccenssucsssuessessensasssssesseseeseuseasasneseesseneasenecasaarsens
85dB
Separation
(1KHZ)
oe
.eccsssscssssesessesesseesesenenesseesnseesesssseseseeenesnsnseneeseseeuensaeeatieenerserssssensasessascasesensarsetsessreessussnens
55dB
Do-Emphasis
(Ref.
1KHZ)
oo...
ecscecsssssesesessesseseacsnsnessseeneneensasseesesesesssnsnsseseenessnacacaneseaenenseneetineeneenens
4kHz
:
-20+3dB
: 16kHz : -2043dB
FM RADIO
Infermiediate:
Frequency”
asc....ccsieesccecdandes
ssesenecceesensnsteonsestecenevesesncenscossrstirensesstconsddeusessibessussvedeuesgentes
10.7+0.1MHz
Frequency
Range
oo...
ecssssesessssssssrsccsesssssessssssesesesesecseassaesseneseseesenesesesuenececesaesenuenenasesteseeesesisasesanenenes
87.5
~108MHz
Usable Sensitivity (Mono, 30dB S/N, at 98.1MHZ) ou... eee cessceeeeneeeeeecsesesesenaseecsescseceeeseesecsesenenneneneneeeees 17.2dBf
-3dB
Limiting
Sensitivity
(at
98.1MHZ)
.......sssesssecseessseecseescossessesesssssecnssessunessancsnssecanecssnecanectnecsnseranacsoasseensens
19.2dBf
S/N Ratio (Stereo, at 98.1MHZ) oo. eecccceeesssseesescssssssssseenssesenssesneseessusseaenensenseueasonseaeacensesaenseesareeseeneenas 56dB
Image
Rejection
(at
106.1MHZ)
.......sssssssseseesesessssesesseesestsseeseessseesesnsaesnesssnsenssceacsasseeesenenecasaserensnecanensasenteaeansensas
40dB
IF Rejection (at 90.1MHZ) ....sccesssscsessssseetesesseseseenssscseessenesnssssacseesenssassesnecssnssesaseaesseneeneasesssensaeeneensnneseensentteney 60dB
Distortion (Input 60dB jc, At 98.1MHZ) oo... cecesescscesseseeseesesssenesesneseenssessesssnssnescsseesesnssnesesesreeseasusseneesaneceneneeneeetanes 1%
Frequency Response (Ref. 400HZ, at 98.1MHZ) ........cccecessssesssteeeseseeenssetssseesenteteecsnenseensetseseeneatens 100Hz :0+3dB
10kHz : -12+3dB
Stereo Separation (1kHZ, at 98.1MHZ) oo... cs ccecceseseeseseseseeteneeesesesesensnesssesescesesaneaeseessneaeseuseseeesaeeenentesnnerertace res 20dB
Residual
Noise
(Ref.
400HZ,
at
98.1MHZ)
ce
cceesceessescsssescsssesecenessesesssecsesecsesnscseseecsesseececsenseensessaeseneecaes
25
+5dB
MW RADIO
Intermediate Frequency ou... eeeeccecssessseesseescessseessessesssssenscssesessceseseecsesaessensceesassesasseseeneseaenresaesseseeseeneeseeaass 450kHz
Frequency RANG@ .ss.csccsscscsseesesesesseesssensneenseseecseseeseasessesesseseesseeesensuesssasssaseraeeacateeseesenssenseerscneeeres 531 ~1,602kHz
Usable
Sensitivity
(20dB
S/N,
at
Q99KHZ)
one
eee
csesesesesereecsecsesessssesesesensssasenesseseeassecseceecasacsesecanerseneareres
36dB
S/N Ratio (At 999KHZ)) viecccscssiceesecdessressosecsccdscnsasevacnsucssscdeasuscessduoouscentennatisasceadeaueugitsansinstecsdeeandhasdtadaeduegeagectaeads 44dB
Image Rejection (at 1404KHZ) ou... cesssesseseseseeseneeeneeestsaeneaseetenerssatesseeseassenenesensassrsticsessenseseeaeaeaseasasaneeatetiens 50dB
IF Rejection (@t GOSKHZ) on... eceesesseseeessssescssersssesesseasseesesseeeessenesesesseenssessesessueeesesneesesseneseseeseatenseaeeseeseeretinegs 60dB
DiSiePHOR ASOORIIRY: Staeccetcsaccie sal cab seek clots sn Beat cece ilEece casa e askin te ee cles Lhe 1.5%
Frequency Response (Ref. 400HZ, at Q9QKHZ) oo... eesseseeecesssestenseescataesestesssneecetesestenensaeasatensnees 100Hz : -3+4dB
4kHz : -12+6, -12dB

CDA-7832R
LW RADIO
Intermediate
Frequency
.....ecccceecsessecesesceesssesesssessssceesesessesesacseneseseeseeessessseneseseeceasaensasaseetersneeasinsnssasuesaseneeees
450kHz
Frequency
Range...
csccsccsssssssssssssssssensenecsesssessarensssesnenesstsaseneeneescaseasenesseensusssossatsessnesnnensentonsscenes
153
~281kHz
Usable
Sensitivity
(20dB
S/N,
at
216KHZ)
oo...
ceeseeesenessesnecesensesneeseesessnsneesusnsssseasseesesnenereesecnenecassenseeneees
41dB
S/N
Ratio
(at
216KHZ)
oes
eeeeeeseseseessesessssssssceseneaesesensaseecesneeeneneanesasseneenanensacenenenereeasaesnenssnsneuassasevevenensaenenesees
42dB
Image
Rejection
(at
270KHZ)
a...
sess
essssssesssesseseeseesenessaeseersseeaseeneneensasenneseeassnsantansaneeasincssssossnssnsnensenennsestanseses
40dB
IF
Rejection
(at
162KHZ)
oon..eeccccsscsseeseseesenteneseneenssenssnsennenencesesneenensasscenenenesssssasessaneecsvensacesesnsesesenaneanesesenenenes
50dB
Distortion
(at
21GKHZ)
.o...seceececsecesseessesesstssesuceseseescsesnesesseesaveseaesassceuenecsesecassseacsseacanenstsensesssuasnsassmsssensnsecavasegssoenanegs
2%
Frequency
Response
(Ref.
400HZ,
at
216KHZ)
.......csssssessesecesecseseenteneatseeneensersaeassanenseseneneenenssssasents
100Hz
:
-3+4dB
4kHz : -12+6, -12dB
GENERAL
Power
SUPPly
.....scsscsesssescseceseesscecnsessesssssessevsvevacssssssneessseasseasesssessseseussgsnecesensceaessenencneneessonersesseessasseaneasanees
DC14.4V
Power
Output
(10%
T.H.D.)/Mmpedance
o..ccccecsecsesseeneesseecsesesseneseseeneaseneeeenseeetensereneasensnessseasaseanes
16W/ch/4ohm
Pre-Output
Voltage/Impedance
oo.....essesseesesscsssseneneneeseeensessetseseeceeeeseneeesseesseneneraneassencaterensseseneaaseas
2.7V/10kohm
SEMICONAUCIOIS
—oo.esecceecesceeccececeeseceeseeseecsecsaescsecseesecaesessassecseesaeeatenes
35IC's,
66Transistors,
22Diodes,
7Zener
Diodes
Dimensions
(W
XH
XD)
oe
eceeceeseeseeseeseestesssesscsssssssseeescaesnsncessescessnssesscauaeseneeeseenerscnenenes
Nose
:
177
X46
X17.5mm
Chassis : 178 X50 X152mm
Weight
—
...s.sccsssssssssssesssesesseseseevseevsnsssssnsssnssescenesasecssseensseaesessaaescsssessacneceneensesereseseensesseseasessnensessseuateneuscauseosaaaeenas
1.7kg
NOTE
:
Due
to
Continuing
product
improvement,
specifications
and
designs
are
subject
to
change
without
notice.

CDA-7832R
Servo Monitor (Part No. 01E20845S01)
1. Purpose
DP-L mechanism built-in CDA-7832R performs digital signal processing in the inside of Digital
Servo LSI and the outside alignment circuit builds in to this LS! and each alignments are automatic.
This DT Mechanism Servo Monitor is a jig for the automatic alignment circuitry.
Please refer to the following list for the reference;
1. LED indicates the alignment.
2. Diagnosis of automatic alignment.
3. LED indicates a failure item for easy failure analysis of servo circuitry.
External View
S[=[=[=[=[=
% For this digital servo LSI, no adjustment was made.
us
MMAPINE
LPS VALUE
* The numbers of the automatic alignment sequence.
ll. Connection Points and Connection Method
OP-L Mechanism
‘~-—— Extension Cable (Part No. 01E23256S01)
Main P.C.Board (Component Side)
NOTE : For the Test Points (T.P.101~105),
refer to the Parts Layout on P.C.Boards
and Wiring Diagram.
DT Mech. Servo Monitor ~
Connect each of the wires to the Test point as illustrated in the diagram.
* Be very careful not to shorts the test points since they are located close together.
* DT Mechanism Servo Monitor can be used for the DP-L mechanism.

CDA-7832R
ill. Operating Specifications
The
automatic
adjustment
operations
of
the
CDA-7832R
are
performed
by
output
of
the
commands
of
the
various adjustment items from the main microprocessor. Adjustments are performed in response to these
commands
by
the
digital
servo
LSI.
This
servo
monitor
jig
receives
the
signal
returned
to
the
main
microprocessor
from the digital servo LSI and causes the LED to light or go off. The adjustment condition (of either completed
or not yet completed) of the various adjustment items can be checked using the lighting condition of this LED.
The following test discs are required for the good/fault judgment:
1. A-BEX TCD-721 (6th track - 1.2mm) : Scratch test disc
2. A-BEX TCD-782 : Signal test disc
Measures to be Taken Corresponding to the LED Indication |
4. When a LED other than FAGC or TAGC lights, perform the fault causation analysis using the fault diagnosis chart
according to the LED indication.
i) LED indications Ut: Faulk Unit: OK
SS
aaa
adjustment
Focus offset Corrects the focus error value as an offset.
the presence or absence of a disc.
adjustment value.
adjustment
=e eel
ii) Seven-Segment LED (LPS Value)
Not used since this model is a single CD player. Indication shows "00".
Measurements
A. RF Signal Level Measurement
The main beam of the returning light is received by the photodiode and the output voltage is obtained by current-voltage
conversion of A+B+C+D.
1. Block Diagram
Sample player Oscilloscope
2. Measurement Method
(a). Connect the ground terminal of the oscilloscope VRO (TA2066F (1C1102), pin 20) and measure the RFO signal
(of TA2066F (1C1102), pin 21).
(b). Play the first track of the measurement disc A-BEX TCD-782.
(c). Read the peak-to-peak value of the waveform.
Specification: 1.2+0.3, -0.2V
* When the value is outside of the specification (i.e., not good), check TA2066F (IC1102) and the pick-up.
B. Jitter Measurement
The standard deviation of the pulse width when a trigger is applied to the rising edge of the 3T component of the RF signal.
1. Block Diagram
Sample player
2. Measurement Method
(a). Connect the ground terminal of the jitter meter to VRO (TA2066F (IC 1102), pin 20) and measure the RFO signal
(of TA2066F (1C1102), pin 21).
(b). Play the first track of the measurement disc A-BEX TCD-782.
(c). Read the indicated value of the jitter meter.
Specification: 25nS or less
* When the value is outside of the specification, check TA2066F (IC1102) and the pick-up.

cpa.7822R|
C. Focus Servo Gain Measurement
Measure the focus servo open loop gain in the servo-on (closed loop) condition.
1. Block Diagram
Sample player Oscillator and oscilloscope
2. Measurement Method using an Oscillator and an Oscilloscope
(a).
(b).
(c).
(d).
. Output frequency (1.2 kHz, 200 mVP-P) from OSC
3. Connection (Example)
Connect OSC output to resistor for gain measurement (100 ohm).
(Connect a servo driver side to positive side.) osc
Connect CH1 of oscilloscope to a servo driver side of resistor
for
gain
measurement
(100
ohm).
Ae
veneer
(Connect
negative
side
with
GND
of set.)
Connect CH2 of oscilloscope to TC9296F (IC 1101) side of
resistor for gain measurement (100 ohm).
(Connect negative side with GND of set.) Common with the
Play back the eighth track of A-BEX TCD-782 disc for POA LHe
measurement. (No sound recording track)
TC9296F
(11101) #51 FOO
and compare the amplitude of CH1 and CH2 of oscilloscope
and convert into dB.
Gain (dB) =20 Log (CH2/CH1)
Specification: Gain Normal if it is within 0+3dB.
* If the specificaiton is out (NG), TC9296F (IC1101)
(Digital Servo LSI) is malfunction.
NOTE: AC voltmeter is available to measurement.
BA6791FP (iC1103)
* FOO: Focus drive output
D. Tracking Servo Gain Measurement
Measure the tracking servo open loop gain in the servo-on (closed loop) condition.
1. Block Diagram
Sample player Oscillator and oscilloscope
2. Measurement Method using an Oscilloscope
(a).
(b).
(c).
(d).
(e).
Connect OSC output to resistor for gain measurement (100 ohm). F
(Connect a servo driver side to positive side.) 8. Connection (Example)
Connect CH1 of oscilloscope to a servo driver side of resistor
for gain measurement (100 ohm).
(Connect negative side with GND of set.)
Connect CH2 of oscilloscope to TC9296F (IC 1101) side of resistor
for gain measurement (100 ohm).
Play back the eighth track of A-BEX TCD-782 disc for
measurement. (No sound recording track)
Output frequency (1 kHz, 50 mVP-P) from OSC
and compare the amplitude of CH1 and CH2 of oscilloscope
and convert into dB.
Gain (dB) =20 Log (CH2/CH1)
Specification : Gain Normal if it is within 0£3dB.
* If the specificaiton is out (NG), TC9296F (IC1101)
(Digital Servo LSI) is malfunction.
NOTE: AC voltmeter is available to measurement.
Oscilloscope or
AC voltmeter
CZ, Common with the
ground of the set
BA6791FP (IC1103)
* TRO: Tracking drive output

CDA-7832R
Adjustment Procedures
1. FM SECTION
(1) Dummy Antenna Circuit
1 100hm 450hm_—,
Input | 600hm ‘Output
ice SER One oa De ec aT Bo \
For 50 ohm FM Signal Generator Figure 1
(2) Connections
Antenna Receptacle DC Volt Meter
FM Dummy
Antenna
Figure 2
DC Volt Meter
FM Dummy
Antenna
it Under Test
Uni er Tes Figure 3
Antenna Receptacle Oscilloscope
¥ Unit Under Test
FM Dummy
Antenna
Figure 4
AC VTVM
FM Dummy
Antenna
FM
Signal
Generator
Unit
Under
Test
Figure 5
FM Stereo Modulator — FM Signal Generator
Antenna Receptacle
Unit Under Test - ‘:
Speaker Output
FM Dummy
Antenna
GND Figure 6

CDA-7832R
(3) Control Settings
Power Switch
Fader Control ow... ccccsseesesseseseeeeeees Center Position
Balance Control oo... eccsccsscseseeeeseees Center Position
Treble / Buss Control ..........ceccccesescssesseees Center Position
Band Switch: casusesesn chee nteie oct FM
OUIOIS: © sesccacecsseacds leneussvesesdessiowbecs cece steven ce eonoalee OFF
(4) Adjustment Procedures
Signal Generator | Dial Contro! | Test Point Adjustment
IF : 98.1MHz, 72dB T.P.1 .
Adjustment (Mod. OFF) 98.1MHz Adjust L2101 to0+15mvV.
98.1MHz, 46dB
Figure 3 (Mod. 400Hz, 98.1MHz T.P.3 Adjust VR2101 to 3.5 +0.1V
Dev. 40kHz)
Adjust VR2104 for the waveform
: 98.1MHz, 30dB
Figure 4 (Mod. OFF) 98.1MHz
Signal Meter
Adjustment
changing to maximum output.
Figure : Waveform of T.P.5 output.
A
Stop the adjust VR2104 at this time.
98.1MHz, 72dB
5 Speaker | Adjust MAIN VOLUME (VR402)
Noise
Level
ki
Dev.
doh
98:
1MHZ
|
“Output
|
to
obtain
2V
output.
This
value
is
OdB.
oise
Leve
.
Adjustment 98.1MH, -19dB
(Mod. 400Hz,
(2) Figure 5
98.1MHz
|
Speaker
|
Adjust
VR2105
to
-25
+
3dB
output
at
;
Output
|
SG
level
minimum.
Dev. 40kHz)
Stereo Blend 98.1MHz, 40dB
;
:
(Mod.
1kHz,
Adjust
VR2102
for
Lch and
Rh
output
:
a
Fagaraie
Dev.
36kHz,
|
98-1MHz
level
difference
to
be
8
+-20B.
Stereo, Lch Only)
Stereo
98.1MHz,
72dB
Adjust
VR2103
for
Reh
output
to
be
Separation . (Mod. 1kHz, Dev. minimum, and confirm Leh and Reh
Adjustment
niga
36kHz,
Stereo,
eee
output
level
difference
is
more
than
(Leh) Loh Only) 20dB.
98.1MHz, 40dB
Stereo Blend : é
‘
,
(Mod.
1kHz,
Proceed
same
adjustment
under
t4 cri niGiSe Dev. 36kHz, step 5.
Stereo, Rch Only)
98.1MHz, 72dB
Figure 6 (Mod. 1kHz, Dev. Speaker | Proceed same adjustment under step
9 36kHz, Stereo, Output {6 by alternating Lch and Reh.
Reh Only)
=4o=