1. Using the unlock key that came with the unit or a similar tool, unlock the Mounting Box and remove
toward the rear of the unit.
2. Remove the screw (A) located on the rear of the top cabinet and remove the Top Cabinet.
3. Remove two screws (B) located on the rear of the bottom cabinet then remove the Bottom Cabinet.
4. Remove two screws (C) (one located at the left side and one located at the right side of the Front Bracket)
then remove the Hooks.
5. Remove the Front Panel and the Ring.
6. Remove two screws (D) from each side of the base then remove the Base.
7. Remove two screws (E) from the front bracket and remove two screws (F) from the rear cabinet.
8. Remove two screws (G) from the front deck bracket then remove the Front Deck Bracket.
Remove two screws (H) from the rear deck bracket then remove the Deck and the Rear Deck Bracket.
9. Remove the screw (I) and three screws (J) from the Heat Sink then remove the Heat Sink and the K7377 Heat
Sink.
10. Remove the screws (K) and remove the Antenna Clip.
Remove the screw (L) and remove the Wire Clip.
11. Remove two screws (M) from the rear cabinet of the right side then remove the IC7805 Bracket.
12. Remove five screws (N) from the main board then remove the Main Board.
13. Remove four screws (O) from each side of the rear cabinet then remove the Front Bracket and the Rear
Cabinet.
3
Page 4
DISASSEMBLY DIAGRAM
4
Page 5
OPERATION CHECK
GENERAL SPECIFICATIONS OF SIGNAL
Standard frequency
Signal output
Modulation
FM
MW
LW
FM
MW
LW
MW
FM Stereo
98.1 MHz (87.5, 108.0 MHz)
1000 kHz (522, 1620 kHz)
200 kHz (144, 288 kHz)
1mV
5 mV
5 mV
400 Hz 30% MOD.
1 kHz 75kHz DEV.
46% for L only or
R only pilot level 8%
AF output level FM/MW/LW
Power source voltage DC 14.0V (Backup voltage is the same as this)
AF load impedance 4 ohm pure resistance
Balance Center position of level
Tone Center position
The signal strength read in this section is voltage on the antenna.
Test Diagram
2-SPEAKER
FRONT
SPK.
4-SPEAKER4-SPEAKER
RL.
SPR.
FL.
SPK.
RR.
SPK.
FR.
SPE.
2-SPEAKER
FRONT
SPK.
ACC (DV14.4V)
BACK UP (14.4V)
GROUND
DISTORTION
METER
VTVM
VTVM
5
DUMMY
ANTANNA
AM SG
MAIN UNIT
FM SG
POWER ANTANNA
ANT
MPX
STEREOS
MODULATOR
Page 6
BLOCK DIAGRAM
6
Page 7
FM TUNER BOARD
ALIGNMENT LOCATIONS
7
Page 8
ALIGNMENT PROCEDURES
Limiting
FM ADJUSTMENT
Equipment Required
l AM IF/RF signal generator
l Solid-state voltmeter (SSVM)
l Regulated DC power supply
l 2-CH voltmeter
l Distortion meter
FM Alignment Using FM Signal Generator
Note: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible
to avoid overload and clipping.
Step Generator
Coupling
IF FM RF signal
Generator to
Antenna
input.
76 kHz
Pilot
Modulation
-3 dB
Sens.
FM SNC
Adjustment
FM
Stereo
S/N
Auto
Stop
Sens.
Note: The tuner module is well-adjust and adjustment is not recommended.
Signal
generator
to antenna
receptacle
Signal
generator
to antenna
receptacle
98.1 MHz
Dev. 45 kHz
L+R=90 %
Int. 1 kHz
60dBµV output
Signal Generator
Connected to
Antenna
Signal Generator
Connected to
Antenna.
GeneratorDisplay
10.7 MHz
Sweep
output
60 dBµV
75 kHz Dev
45% for L only
or R only pilot
level 10%
60 dB/µV
Output.
98.1 MHz
@ 40 dB µ
98.1MHz
Int. 1kHz
Dev. 75kHz.
98.1 MHz Int. 1kHz
Dev. 75kHz
28 dB/µV.
98.1 MHz
98.1 MHz VR105
98.1 MHz
98.1 MHz
98.1MHz VR104
98.1 MHz
Setting
Adjustment Remarks
T101
VR101
VR106
VR107
Adjust so that
maximum AF
output power and
minimum distortion
Adjust to
76 kHz
Adjust VR101
Making -14dB
(±2dB) Limiting
Sensitivity.
VOR - VOL = 10 dB
(± 3 dB)
Adjust VR104 FM
Stereo S/N is the
optimum.
Adjustment
AF to stop station.
8
Page 9
MW ADJUSTMENT
Equipment Required
l AM IF/RF signal generator
l Solid-state voltmeter (SSVM)
l Regulated DC power supply
l 2-CH voltmeter
l Distortion meter
AM Alignment Using AM Signal Generator
Note: Press the radio power switch to on the radio. Signal generator output must be kept as low as possible
to avoid overload and clipping.
Step
AM
Seek
SENS.
Note: The tuner module is well-adjust and adjustment is not recommended.
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Page 27
PANEL
EXPLODED VIEW PARTS LIST
Ref. No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Description RS Part No. Mfr’s Part No.
Lens; N/R CDD156X3.7.3 (S. OPC0000)
Panel Top For Fold Down (S. OPC0201)
Panel Bottom For Fold Down
M.P 156FX3.7.3 (Silver) VFD; N/Brand
Open Knob For Fold Down (S. OPC0201)
RE Knob Spring
VOL Knob (S. OPC0201)
VOL Ring (S. PMS291C)
VOL Ring Filter
MODE Knob (L-Up) (S. OPC0201)
SEL/P-EQ Knob (Crystal)
Base For SEL Knob (S. Plum red 198C)
DSP Knob (S. OPC0201)
1PAU Knob (L-Up) (S. OPC0201)
2SCN Knob (L-Up) (S. OPC0201)
3RPT Knob (L-Up) (S. OPC0201)
4SHF Knob (L-Up) (S. OPC0201)
5 Knob (L-Up) (S. OPC0201)
6 Knob (L-Up) (S. OPC0201)
AMS Knob (L-Up) (S. OPC0201)
Power Knob For F. Down (L-Up) (S. OPC0201)
1-6 PVC Sheet
DSP/AMS Base
Tune/Track Down Knob (L-Up) (S. OPC0201)
Tune/Track Up Knob (L-Up) (S. OPC0201)
BND/LOU/MONO Knob (S. OPC0201)
LO/MU Knob (S. OPC0201)
VFD BJ883GNK (FUTABA) CDX3.2
Key Board
CD115 Rotate Encoder VOL
MODE Back Light (S. Milk)
SEL Back Light (S. White)
Middle Back Light
52-15630-81
52-15628-82
52-15631-81
52-15639-81
52-15635-81
35-15601-00
52-15650-00
52-15632-81
52-15633-81
52-15641-80
52-15642-80
27-B0883-00
12-01561-305
18-00115-00
52-15649-01
52-15653-01
52-15651-00
34
35
36
Right (Power) Back Light (S. White)
EJ Knob For F. Down (L-Up) (S. OPC0000)
Screw ∅2x8 BH/ST Black
Panel
Ring +Spray Silver
Base/ABS (New Socket)
Front Cabinet /CD049X3.1
KMC CD MECHA. CDM -211S
Rear Cabinet
Top Cabinet
Bottom Cabinet
Main Fiber
Main Board
Heat Sink (Y) (W/O CDC)
Mounting Box
CD Windows Sheet
Shade (III)
Panel Bracket (CD)
Pipe
Bracket Spring
Gear 1 (POM)
Panel Bracket Spring (Left)
Panel Bracket Spring (Right)
GIB (POM)
Open Adaptor
Right Bracket
Gear 2 (POM)
Left Bracket
CD Back Light (PC)
Hook (POM)
Release Spring
Hook Shaft
Lamp Board
Socket Board
Socked Cover Nylon
Right Spring
Spring Bracket (PC)
Wire FIX Fiber
Wire FIX Sheet
Hook
Front Deck Bracket (X3.1)
Rear Deck Bracket
FM Cover
DIODE IN5401
ZENER DIODE 3.6V 0.5W AT.
ZENER DIODE 4.7V 0.5W AT.
ZENER DIODE 5.1V 0.5W AT.
ZENER DIODE 6.8V 0.5W AT.
ZENER DIODE 9.1V 0.5W AT.
ZENER DIODE 10V 0.5W
I.C. PT2313L
IC KIA -4558F
IC. SAA-6579T
IC KIA7035P
I.C. TDA -7377 (PWR)
REGULATOR LC-78L18
IC RS8802-004
I.C. TC 9256P
CRYSTAL HC-49/US 7.2MHZ
C. 4.332SMHz HC-49U 30PPM 22PF
CER CAP 33P NPO ±5%
CER CAP 39P NPO ±5%
AXIAL CER CAP 1000PF ±20% TP.
AXIAL CER CAP 0.01µF+80/-20% TP.
AXIAL CER CAP 0.1µF +80/ -20% TP.
A. CER CAP 0.015µF +80/ -20% TP.
AXIAL CER CAP 22PF ±5%
A. CER CAP 0.022µF +80/ -20% TP.
AXIAL CER CAP 2700PF ±20% TP
AXIAL CER CAP 470PF ±10% TP.
AXIAL CER CAP 680PF ±10% TP.
AXIAL CER CAP 0.1µF X7 R ±10% TP.
E. CAP 100µF 10V (∅5X7MM MINI)
E. CAP 1000µF 10V (∅8X14MM)
E. CAP 47µF 10V (∅4X7 MINI)
E. CAP 220µF 10V ∅6MM
E. CAP 10µF 10V (∅4X7MM)
E. CAP 100µF 10V (∅6.3X7MM)
E. CAP 2.2µF 16V ∅4X7
E. CAP 22µF 16V (∅4X7MM)
E. CAP 220µF 16V (∅6.3X12MM)
E. CAP 3300µF 16V 105°C
E. CAP 4.7µF 16V (∅4X7MM)
E. CAP 47µF 16V (∅5X7MM)
E. CAP 0.22µF 50V (∅4X7MM) MINI
E. CAP 0.33µF 50V (∅4X7MM)
RES. 1Ω 1/4W
RES. 2.2Ω 1/16W (TAPPING)
RES. 10Ω 1/16W (TAPPING)
RES. 100Ω 1/16W (TAPPING)
RES. 1k Ω 1/16W (TAPPING)
RES. 10k Ω 1/16W(TAPPING)
TRANSISTOR 2SA1175-FF
TRANSISTOR 2SC2785-FF
DIODE IN-4148 AT. (TAPPING)
A. CER CAP 0.022µF +80/ -20% TP.
TAN CAP 2.2µF 16V
E. CAP 100µF 10V (Ø5X7MM MINI)
E. CAP 1µF 16V (Ø4X7MM)
RES. 1k O 1/16W (TAPPING)
RES. 10k O 1/16W (TAPPING)
RES. 22k O 1/16W (TAPPING)
RES. 330O 1/16W (TAPPING)
RES. 8.2k O 1/16W (TAPPING)
MICRO INDUCTOR 33µH AXIAL TYPE
SEMI-FIXED SC-065 B20K Ø6MM 3H
TR. 8050C TO -92-B
LED Ø3MM RED
P.LAMP AA 3V 60MA Ø3X5.5 K.T.
RES 1k? 1/16W
RES 150? 1/16W
PCB CD-032X2 LB 1.0MM 41X18
TACT SW. 4P 7MM 160G (1102B)
PUSH SW. SPP51377A (DS -20) KONEX
TRANSISTOR BD435 “SAM SUNG”
TRANSISTOR 2SC2785-FF
DIODE IN-4148
ZENER DIODE 6.8V 0.5W
ZENER DIODE 12V BZX55-C12 ITT
CRE CAP 0.1µF 25V
MYLAR CER 0.0018µF ±10%
CHIP CER KC20E1C474M-TP
E. CAP 220µF 16V (Ø6.3X12MM)
E. CAP 4.7µF 16V (Ø4X7 MINI)
E. CAP 47µF 16V (Ø5X11 MM)
E. CAP 33µF 50V
RES. 4.7Ω 1/16W
RES. 1.5k Ω 1/16W
RES. 22k Ω 1/16W
RES. 2.7k Ω 1/16W
RES. 33k Ω 1/16W
RES. 470Ω 1/16W
RES. 560Ω 1/16W
RES. 6.8k Ω 1/16W
MICRO INDUCTOR 10UH AXIAL TYPE
COIL 27UH AXIAL TYPE (10MM)
PCB 09368 (VFD) DRV
VFD TRANS EE-13 SAGAMI
4
1
1
1
1
1
1
1
1
1
1
1
1
1
3
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
33
Page 43
SPECIFICATIONS
T. H. D·························································································································· Less than 0.35%
Signal to Noise Radio ····································································································· More than 60 dB
Channel Separation ········································································································· More than 60 dB
Frequency Response···············································································································20Hz-20kHz
Stereo separating (FM) ····································································································· 30 dB (at 1kHz)
Signal to noise ratio (FM)·································································································Better than 50 dB
Output power ······························································································································ 4 X 40W
Speaker output impedance········································································································4 To 8 ohm
Power source······································································································DC 12V, Negative ground.
Frequency range ·········································································································FM 87.5 - 108.0MHz