Alpine CD-9841-E, CD-9841 Service Manual
SERVICE MANUAL
FM/AM CD Receiver
(CDE-9841)
2 / 05-A
68E38344S01
CDE-9841/CDE-9841E
<Cautions for Safe Repair Work>
r
s
- 2 -
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.
Warning
Caution
*The following symbols indicate two levels of cautions.
When you see this symbol, you have to be very careful.
When you see this symbol, you have to follow the instructions there.
If you ignore this symbol and handle the product incorrectly or unsafely,
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.
Warning
Do not look squarely into the laser light
coming from the pickup.
You may loose you sight. Use of an incorrect fuse may result in a fire.
Caution
Do not allow wiring to be caught in the Battery Caution
screw/chassis.
If wiring is caught in the screw/chassis, it may Confirm the correct polarity and seat of the
cause a short circuit, resulting in a fire. battery.
Fuse Caution
Always use a designated fuse.
Use the designated battery.
An incorrect battery or an improperly connected
or seated battery may result in a fire.
High Temperature Caution Designated Parts Caution
Touching the heat sink may cause severe burns. Look up the part list and ensure that only
designated parts are used to prevent problems or
accidents.
Reverse Power Supply Connections o
Misconnections Caution
Reverse power supply connections or prevent problems with ignition/breakdown.
misconnections may cause ignition problems and
smoke may result.
Soldering Caution Wear Glove
Hot solder from solder splash may cause severe Wear gloves to prevent electrical shocks or injury
burns. from the end face of the metal.
Wiring Caution
Ensure that the wiring is correct when rewiring to
Packing Assembly Parts List
- 4 -
CDE-9841/CDE-9841E
Symbol SymbolDescription
Part No. Part No.
Description
No. No.
101 15-01970Z01 CASE,INNER
102 15D01798K03 CARRYING,CASE
103-1 03S60820Y16 SCR,MCH 5X8 ZN A
103-2 03S60824Y01 SCR,WEV 1.7X4 ZN A
104 07-01964Z01 BKT,RELEASE
NOTE: #2:For CDE-9841 Model Only, $2:For CDE-9841E(General Foreign) Model Only, %2:For CDE-9841E(Chinese) Model Only,
Others:Common.
105 09-02256Z01 ASSY,ANIC-0008-01A
#2
105 09-01538Z05 ASSY,POWER WIRE9841E
$2
105 09-01538Z05 ASSY,POWER WIRE9841E
%2
106 68-00493Z95 O/M AOAM AOTA
#2
106 68-02278Z05 O/M AAO AODN
$2
106 68-02770Z01 O/M,AOCH 9841
%2
Packing Method View
102
106
101
BOTTOM Side
105
103
104
103
104
105
X2
103
-2
X1
-1
X4
X1
CDE-9841/CDE-9841E
- 5 -
Specifications
< FM RADIO >
Intermediate Frequency ........................................................................................................................ 10.7±0.1MHz
Frequency Range .................................................................................................................... 87.7 to 107.9MHz (#1)
87.5 to 108.0MHz ($1)
Usable Sensitivity (3% Dist., Mono, at 98.1MHz) ........................................................................................... 20.2dBf
Quieting Sensitivity (50dB S/N, Mono, at 98.1MHz) ....................................................................................... 20.2dBf
-3dB Limiting Sensitivity (at 98.1MHz) ........................................................................................................... 20.2dBf
Residual Noise (Ref. 400Hz, at 98.1MHz) .................................................................................................... 30±10dB
S/N Ratio (at 98.1MHz) ......................................................................................................................... Stereo : 55dB
Mono : 60dB
Image Rejection (at 106.1MHz) .......................................................................................................................... 40dB
IF Rejection (at 90.1MHz) .................................................................................................................................. 60dB
Distortion (Input 60dBu, at 98.1MHz) ................................................................................................................. 1.5%
Frequency Response (Ref. 400Hz, at 98.1MHz) ................................................................................ 100Hz : 0±3dB
10kHz : -13±3dB
Stereo Separation (1kHz, at 98.1MHz) .............................................................................................................. 20dB
< AM RADIO >
Intermediate Frequency ....................................................................................................................... 1st : 10.8MHz
2nd : 450kHz
Frequency Range ...................................................................................................................... 530 to 1,710kHz (#1)
531 to 1,602kHz ($1)
Usable Sensitivity (20dB S/N, at 1,000kHz(#1), 999kHz($1)) ............................................................................ 35dB
S/N Ratio (at 1,000kHz(#1), 999kHz($1)) .......................................................................................................... 44dB
Image Rejection (at 1,400kHz(#1), 1,404kHz($1)) ................................................................................ 2nd IF : 40dB
IF Rejection (at 600kHz(#1), 603kHz($1)) ............................................................................................. 2nd IF : 60dB
Distortion (at 1,000kHz(#1), 999kHz($1)) ........................................................................................................... 1.5%
Frequency Response (Ref. 400Hz, at 1,000kHz(#1), 999kHz($1)) .................................................... 100Hz : -3±4dB
4kHz : -14±6dB
< CD SECTION >
System ....................................................................................................................... Optical (Compact Disc System)
Channel Balance (1kHz) ................................................................................................................. TCD-782 : 0±3dB
Distortion (1kHz) ................................................................................................................................ TCD-782 : 0.3%
Frequency Response (Ref. 1kHz, 0dB) ............................................................................... TCD-782 : 17Hz : 0±3dB
127Hz : 0±2dB
10.007kHz : 0±2dB
19.997kHz : -1±4dB
S/N Ratio ........................................................................................................................................... TCD-782 : 85dB
Separation (1kHz) ............................................................................................................................. TCD-782 : 55dB
De-Emphasis (Ref. 1kHz, 0dB) ........................................................................................ TCD-782 : 4kHz : -20±3dB
16kHz : -20±3dB
NOTE : #1 : For CDE-9841 Model Only, $1 : For CDE-9841E Model Only, Others : Common.
CDE-9841/CDE-9841E
- 6 -
< CD Deck Mechanism >
Test Disc ....................................................................................................................................................... TCD-782
RF Waveform Amplitude .......................................................................................................................... 1.0±0.5Vp-p
Quantity of Jitter ............................................................................................................................. Less than 30nsec
Measurement Angle Range ............................................................................................... Front and Rear : -15°~75°
Right and Left : ±45°
Laser Current ................................................................................................................................. Initial value ±5mA
(The initial value of laser current is indicated on the Flexible Cable.)
< Pickup >
Wave Length .................................................................................................................................................... 795nm
Laser Power .................................................................................................................................................. CLASS I
< GENERAL >
Power Supply ............................................................................................................................................... DC14.4V
Power Output (FM 98.1MHz, Mod.1kHz, T.H.D.1%) / Impedance ........................................... 16W / ch / 4 ohm (#1)
(TCD-782 (1kHz, 0dB), T.H.D. 10%) / Impedance ............................................ 16W / ch / 4 ohm ($1)
Pre Output (TCD-782 (1kHz, 0dB), T.H.D. 1%) / Impedance ............................................ 6 +3/-2dBV / ch / 10k ohm
Back Up Current .................................................................................................................................................. 5mA
Dimensions (W x H x D) ................................................................................................ Chassis : 178 x 50 x 162mm
Nose : 188 x 58 x 18mm
Weight ................................................................................................................................................................ 1.6kg
NOTE : #1 : For CDE-9841 Model Only, $1 : For CDE-9841E Model Only, Others : Common.
: Due to Continuing product improvement, specifications and designs are subject to change without notice.
Extension Cable
- 7 -
*Always connect the Extension Cable when making checks of voltage and repair.
CD Deck Mechanism
DP23S87T
MAIN P.W.Board
1
0
1
B
C
CDE-9841/CDE-9841E
CB801
CB501
(1)
(2)
CH401
FRONT P.W.Board
(1) 01E29616S01
(2) 01V37775S01
Block Diagram
- 8 -
Tuner unit
E2P
ROM
Tuner on
N.C. MPX
RF IF
AM
PLL
TUNER+B
(CD MECH)
DP23S87T
Selector
CD
Vol.1
Main CPU
Tre/Bass
A-Mute
E-VOL
RESET
BAT DET SW
Vol.2
MUTE
DRIVER
Delay Circuit
Power cont
SYSTEM POWER IC
Batt-Det / VDD
PWR-ON / CD SERVO
TUNER ON
CDE-9841/CDE-9841E
MUTE
Front
Power IC
Rear
BATT
Pre-OUT
SubWoofer/Front
LCD DRIVER
LCD
DISPLAY
VDD+5V
VDD
Key Input
A/D
LCD+B
Nose DET
Remote
Control
Nose
Light
Nose PWR SW
CDE-9841E
Model Only
LCD
Light
ACC DET
CD-SERVO
PWR ON
PWR ANT
Rem SW
AUDIO +B
LED +B
ACC
POWER CONNECTOR
P.ANT
O.REM
Parts Layout on P.W.Boards and Wiring Diagram(1/5)
- 9 -
MAIN P.W.Board
1
(Component Side View)
CDE-9841/CDE-9841E
2
4
3
ANT001
2
ASSY,ANT CABLE 9805A
BLK
(ANT)
SHIELD
WHT
1
34
1
46
13
1
12
3512
19
15
24
142
21
53
35
B
E
B
E
E
B
2
125
To CB101
From DP-S MAIN P.W.Board (CB801)
18
8
16
B E
221
1
9
5
A
B
E
EB
To CB501
8
915
1
15 9
From FRONT P.W.Board (CH401)
Orange Color Pattern:Component Side Pattern
Blue Color Pattern:Foil Side Pattern
FGEDCB
Parts Layout on P.W.Boards and Wiring Diagram(2/5)
- 10 -
CDE-9841/CDE-9841E
1
2
3
MAIN P.W.Board (Foil Side View)
1
23
5
B
1
3
B
E
E
1
5
32
E
B
E
B
4
5
A
NOTE : #1 : For CDE-9841 Model Only,
$1 : For CDE-9841E Model Only,
Others : Common.
#1
$1
$1
$1
E
B
1
23
$1
5
Orange Color Pattern:Component Side Pattern
Blue Color Pattern:Foil Side Pattern
FGEDCB
Parts Layout on P.W.Boards and Wiring Diagram(3/5)
- 11 -
1
FRONT P.W.Board
(Component Side View)
2
3
$1
$1
FRONT P.W.Board (Foil Side View)
To MAIN P.W.Board (CB501)
1 8
To CH401
CDE-9841/CDE-9841E
4
1
$1
23
NOTE : $1 : For CDE-9841E Model Only,
Others : Common.
159
4
5
A
$1
B
E
$1
Orange Color Pattern:Component Side Pattern
Blue Color Pattern:Foil Side Pattern
FGEDCB
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