Panasonic RX-D55EE User manual

© Panasonic Corporation 2010. All rights reserved.
Unauthorized copying and distribution is a violation of
law.
PSG1005030AE
Portable Stereo CD System
Model No. RX-D55EE
Product Color: (K)...Black Type
TABLE OF CONTENTS
PAGE PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Caution For Fuse Replacement------------------------ 4
1.4. Protection Circuitry ---------------------------------------- 4
1.5. Safety Part Information----------------------------------- 4
2 Warning -------------------------------------------------------------- 5
2.1. Prevention of Electro Static Discharge (ESD)
to Electrostatically Sensitive (ES) Devices---------- 5
2.2. Precaution of Laser Diode------------------------------- 6
2.3. Service caution based on Legal restrictions -------- 7
2.4. Handling Precaution for Traverse Unit----------------8
3 Service Navigation --------------------------------------------- 10
3.1. Service Information -------------------------------------- 10
3.2. Notes -------------------------------------------------------- 10
3.3. Different Points ------------------------------------------- 11
4 Specifications ---------------------------------------------------- 12
5 Illustration of IC’s, Transistors and Diodes ------------ 13
6 Schematic Diagram -------------------------------------------- 15
6.1. MAIN CIRCUIT (1/6) ------------------------------------ 15
6.2. MAIN CIRCUIT (2/6) ------------------------------------ 16
6.3. MAIN CIRCUIT (3/6) ------------------------------------ 17
Notes: This model is based on RX-D55EG-K. Please refer to the original service manual
(Order no. PSG1004005CE).

2
6.4. MAIN CIRCUIT (4/6) ------------------------------------ 18
6.5. MAIN CIRCUIT (5/6) ------------------------------------ 19
6.6. MAIN CIRCUIT (6/6) ------------------------------------ 20
6.7. POWER CIRCUIT---------------------------------------- 21
7 Printed Circuit Board ------------------------------------------ 22
7.1. MAIN P.C.B. ----------------------------------------------- 22
7.2. DECK P.C.B. ---------------------------------------------- 23
7.3. POWER, BATTERY (1), BATTERY (2) &
MUSIC PORT P.C.B. ------------------------------------ 24
8 Exploded View and Replacement Parts List ----------- 25
8.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 25
8.2. Electrical Replacement Parts List -------------------- 31

3
1 Safety Precautions
1.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, carry out the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.1.1. Leakage Current Cold Check
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. measure the resistance value, with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1MΩand 5.2MΩ. When the exposed metal does not have a return path to the chas-
sis, the reading must be
1.1.2. Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kΩ, 10 watts resistor, in parallel with a 0.15μF capacitors, between each exposed metallic part on the set and a
good earth ground such as a water pipe, as shown in Figure 1.
3. Use an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent)
may be used to make the hot checks, leakage current must not exceed 1/2 milliamp. In case a measurement is outside of the
limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and rechecked before it is
returned to the customer.
Figure. 1

4
1.2. Before Repair and Adjustment
Caution : DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
• Current consumption at AC 230V, 50Hz in TUNER mode at volume (min) should be (~300 mA).
1.3. Caution For Fuse Replacement
1.4. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
• No sound is heard when the power is turned on.
• Sound stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
"shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.5. Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.
These parts are marked by in the Schematic Diagrams, Exploded View & Replacement Parts List. It is essential that these
critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire or other hazards. Do not modify the
original design without permission of manufacturer.
Table 1
Safety Ref. No. Part No. Part Name & Description Remarks
14 RKHN0005B-H HANDLE
401 RD-DAPX001-V TRAVERSE UNIT
A2 K2CQ2CA00007 AC CORD
A3 RQTX1037-R O/I BOOK (Ru/Ur)
PCB3 REPNT0063H POWER P.C.B. (RTL)
L5901 ELF15N035AN LINE FILTER
T5903 G4C5ACH00007 TRANSFORMER
Z5902 ERZVA5Z471 ZNR SURGE
F5901 K5D402BLA013 FUSE
F5902 K5D162BLA013 FUSE
FP4100 K5G502A00039 FUSE PROTECTOR
FP5903 K5G502A00039 FUSE PROTECTOR
JK5901 K2AA2B000014 AC INLET
ZA5901 K3GE1ZZ00001 FUSE HOLDER
ZA5902 K3GE1ZZ00001 FUSE HOLDER
ZA5903 K3GE1ZZ00001 FUSE HOLDER
ZA5904 K3GE1ZZ00001 FUSE HOLDER
R4149 D0AF1R5JA113 1.5 1/8W
R4153 D0AF1R5JA113 1.5 1/8W
R4154 D0AF1R5JA113 1.5 1/8W

5
2 Warning
2.1. Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec-
trostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electrostatic discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as alumin-
ium foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder remover device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or compara-
ble conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution :
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) suf-
ficient to damage an ES device).

6
2.2. Precaution of Laser Diode
Caution:
This product utilizes a laser diode with the unit turned "on", invisible laser radiation is emitted from the pickup lens.
Wavelength: 795 nm (CD)
Maximum output radiation power from pickup: 100 μW/VDE
Laser radiation from the pickup unit is safety level, but be sure the followings:
1. Do not disassemble the pickup unit, since radiation from exposed laser diode is dangerous.
2. Do not adjust the variable resistor on the pickup unit. It was already adjusted.
3. Do not look at the focus lens using optical instruments.
4. Recommend not to look at pickup lens for a long time.
CAUTION!
THIS PRODUCT UTILIZES A LASER.
USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT
IN HAZARDOUS RADIATION EXPOSURE.

7
2.3. Service caution based on Legal restrictions
2.3.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
Service caution for repair work using Lead Free Solder (PbF)
• The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
• To put lead free solder, it should be well molten and mixed with the original lead free solder.
• Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
• Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt the
lead free solder.
• Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30 degrees
C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
• The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)

8
2.4. Handling Precaution for Traverse Unit
The laser diode in the optical pickup unit may break down due to static electricity of clothes or human body. Special care must be
taken avoid caution to electrostatic breakdown when servicing and handling the laser diode in the traverse unit.
2.4.1. Cautions to Be Taken in Handling the Optical Pickup Unit
The laser diode in the optical pickup unit may be damaged due to electrostatic discharge generating from clothes or human body.
Special care must be taken avoid caution to electrostatic discharge damage when servicing the laser diode.
1. Do not give a considerable shock to the optical pickup unit as it has an extremely high-precise structure.
2. To prevent the laser diode from the electrostatic discharge damage, the flexible cable of the optical pickup unit removed
should be short-circuited with a short pin or a clip.
3. The flexible cable may be cut off if an excessive force is applied to it. Use caution when handling the flexible cable.
4. The antistatic FPC is connected to the new optical pickup unit. After replacing the optical pickup unit and connecting the flexi-
ble cable, cut off the antistatic FPC.
2.4.2. Grounding for electrostatic breakdown prevention
Some devices such as the CD player use the optical pickup (laser diode) and the optical pickup will be damaged by static electricity
in the working environment. Proceed servicing works under the working environment where grounding works is completed.
2.4.2.1. Worktable grounding
1. Put a conductive material (sheet) or iron sheet on the area where the optical pickup is placed, and ground the sheet.

9
2.4.2.2. Human body grounding
1. Use the anti-static wrist strap to discharge the static electricity form your body (Figure 2).
Figure 2

10
3 Service Navigation
3.1. Service Information
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
•CD Mechanism Unit (DLS6F):
1) This model uses CD Mechanism Unit (DLS6F).
•Micro-processor:
1) The following components are supplied as an assembled part.
• Micro-processor IC, (IC2100) is supplied as assembled part (RFKWMD55EG).
3.2. Notes
This service manual contains technical information which will allow service personnel’s to understand and service this model.
Please place orders using the parts list and not the drawing reference numbers.
If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service
manual.
1) This service manual does not contains the following information
This simplified service manual is base on RX-D55EG-K. Please refer to the original service manual, RX-D55EG-K (Order No.
PSG1004005CE) for the below mention contents.
- Location of Controls and Components
- Self Diagnostic and Doctor Mode Setting
- Service Fixture & Tools
- Disassembly and Assembly Instructions
- Disassembly and Assembly of Traverse Unit
- Service Position
- Measurements and Adjustments
- Voltage Measurement & Waveform Chart
- Wiring Connection Diagram
- Schematic Diagram Notes
- Terminal Function of IC’s
2) This service manual contains include the following information
- Safety Precautions
- Warning
- Service Navigation
- Specifications
- Illustration of IC’s, Transistors and Diodes
- Schematic Diagram (MAIN & POWER CIRCUIT)
- Printed Circuit Board (MAIN, DECK, POWER, BATTERY (1), BATTERY (2) & MUSIC PORT P.C.B.)
- Exploded View and Replacement Parts List

11
3.3. Different Points
Ref. No. Parts No. Parts name & Description Remarks
RX-D55EG-K RX-D55EE-K
26 RYQN0009H-S RYQN0009L-S BOTTOM CABINET ASS'Y
P1 RPGX3060 RPGX3061 PACKING CASE
A3 RQTX1034-D RQTX1037-R O/I BOOK (Ru/Ur)
A3 RQTX1035-E - O/I BOOK (Du/Da/Sw)
A3 RQTX1041-Z - O/I BOOK (En/Sp/Po/Cz)
PCB1 REPNT0065AA REPNT0065BA MAIN P.C.B (RTL)
PCB3 REPNT0063G REPNT0063H POWER P.C.B (RTL)
PCB6 REPNT0065AB REPNT0065BB DECK P.C.B (RTL)
PCB9 REPNT0063G REPNT0063H BATTERY (1) P.C.B (RTL)
PCB10 REPNT0063G REPNT0063H BATTERY (2) P.C.B (RTL)
PCB11 REPNT0065AC REPNT0065BC MUSIC PORT P.C.B (RTL)
IC4100 C0CBABC00115 C0CBABE00040 IC
IC5901 C0DBEKG00003 - IC
Q5904 B1GBCFJN0033 - TRANSISTOR
Q5905 B1ABCF000176 - TRANSISTOR
D5914 B0JACE000003 - DIODE
D5919 B0JACE000003 - DIODE
D5920 B0ACCK000005 - DIODE
D5921 B0EAKM000117 - DIODE
D5922 B0EAKM000117 - DIODE
D5923 B0EAKM000117 - DIODE
D5924 B0EAKM000117 - DIODE
D5927 - B0ACCK000005 DIODE
D5928 - B0EAKM000117 DIODE
D5929 - B0EAKM000117 DIODE
D5930 - B0EAKM000117 DIODE
D5931 - B0EAKM000117 DIODE
T5904 G4C2AAH00002 - SUB TRANSFORMER
RL5901 K6B1AEA00003 - RELAY
R2115 ERJ3GEYF184V ERJ3GEYF224V 220K 1/10W
R5900 ERJ3GEYJ153V - 15K 1/10W
R5901 ERJ3GEYJ334V - 330K 1/10W
R5907 ERJ3GEYJ103V - 10K 1/10W
R5910 - ERJ3GEYJ473V 47K 1/10W
R5912 ERJ3GEYJ473V - 47K 1/10W
R5913 ERJ3GEYJ824V - 820K 1/10W POWER
R5914 ERJ3GEYJ683V - 68K 1/10W POWER
R5915 ERJ3GEYJ824V - 820K 1/10W POWER
R5917 - ERJ3GEYJ103V 10K 1/10W POWER
R5938 ERJ3GEYF184V ERJ3GEYF154V 150K 1/10W
C4111 F2A1C471A030 F2A1E471A121 470uF 25V
C5905 F1H1H103A219 - 0.01uF 50V
C5906 F1H1H103A219 - 0.01uF 50V
C5907 F1H1H103A219 - 0.01uF 50V
C5908 F1H1H103A219 ERJ3GEY0R00V 0 1/10W
C5916 F1H1H104A913 - 0.1uF 50V
C5917 F2A1C220A019 - 22uF 16V
C5918 F2A1A2210012 - 220uF 10V
C5919 F1H1H104A913 - 0.1uF 50V
C5920 F1H1H104A913 - 0.1uF 50V
C5921 F1H1H104A913 - 0.1uF 50V
C5923 F1H1H104A913 - 0.1uF 50V
C5999 F2A1E220A122 - 22uF 25V

12
4 Specifications
IAmplifier Section
Output power 10 W x 2 (RMS MAX / DC)
PMPO output power 280 W
IFM/AM Tuner, Terminal Section
Frequency Modulation (FM)
Frequency range 87.50 MHz to 108.00 MHz (50 kHz
step)
Amplitude Modulation (AM)
Frequency range 522 kHz to 1629 kHz (9 kHz step)
520 kHz to 1630 kHz (10 kHz step)
Headphone jack
Terminal Stereo, 3.5 mm jack (32 Ω)
Music port (front) jack
Sensitivity 100 mV, 4.7 kΩ
Terminal Stereo, 3.5 mm jack
IDisc Section
Disc played (8 cm or 12 cm)
(1) CD-Audio (CD-DA)
(2) CD-R/RW (CD-DA, MP3* formatted disc)
(3) MP3*
* MPEG-1 Layer 3, MPEG-2 Layer 3
Bit rate
MP3 32 kbps to 320 kbps
Sampling frequency
CD 44.1 kHz
MP3 32 kHz, 44.1 kHz, 48 kHz
Decoding 16 bit linear
Beam source Semiconductor laser (wavelength
795 nm (CD))
Frequency response 40 Hz to 20kHz
Number of channels 2 channel, stereo
Wow and flutter Less than possible measurement
data
ICassette Deck Section
Track system 4 track, 2 channel, stereo
Monitor system Variable sound monitor
Recording system AC bias 84 kHz
Erase system Multi pole magnet
Overall frequency response
NORMAL 50 Hz to 12 kHz
IUSB Section
USB port
Media file format support MP3 (*.mp3)
USB device file system FAT 12, FAT 16, FAT 32
USB port power 500 mA (Max)
ISpeaker Section
Speakers Impedance 4 Ω
Full range 2 x 8 cm
Ceramic tweeter 2 x 1.5 cm
IGeneral
Power supply
AC 230 V, 50 Hz
Battery 12 V (8 x LR14, C)
Memory back-up 6 V (4 x R6/LR6, AA)
Power consumption 27 W
Battery life (use only alkaline batteries)
Radio broadcast 3.2 hours
Radio recording 7 hours
CD playback 2.4 hours
CD recording 5 hours
Tape playback 2.5 hours
Dimensions (W x H x D) 408 mm x 148 mm x 271 mm
Mass 4 kg without batteries (4.6 kg with
batteries)
Operating temperature range 0°C to +40°C
Operating humidity range 35% to 80 % RH (no condensation)
Power consumption in standby mode: 2.6 W (approximate)
Notes :
1. Specifications are subject to change without notices.
Mass and dimensions are approximate.
2. Total harmonic distortion is measured by the digital spectrum ana-
lyzer.

13
5 Illustration of IC’s, Transistors and Diodes
1
BA5948FPE2 (28P)
C1BB00000732 (32P)
B0EAKM000117
B0EAMM000038
B3ACA0000264
B1GDCFNN0007
B0ADFJ000004
B0CDAB000019
B0CDAD000010
C0DAEJG00001
C1BB00001120 (36P) C0CBABE00023
MN6627954AMA (100P)
C0HBA0000268 (44P)
RFKWMD55EG (100P)
MNZSFB5KJM2 (64P)
B1ADCF000001
B1ABCF000176
B1ADCE000012
B1GBCFJN0033
B1ABDF000026
12
3
4
5
A
Ca
Cathode
Anode
1
C1BA00000420
C3ABMB000050 (26P)
C0EBE0000124
135
MAZ8056GML
B1BCCG000002
B0ACCK000005
B0BC9R1A0218
1
2
3
4
B1ACCF000094 B1HBECA00004
BCE
BA3313L
A
Ca
Anode
Cathode
1
12
1
14
1
2
3
C0CBABE00040
1
23

14

15
6 Schematic Diagram
6.1. MAIN CIRCUIT (1/6)
A
12 3 4 5 6 7 8 9 10 11 12 13 14
C
D
B
E
G
H
F
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 2
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (2/6)
TO MAIN
SECTION (4/6)
P1
2
3
4
1
P1
: FM/AM SIGNAL LINE: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
5
R5939
0
R2501 220
R2500 220
CD_RCH
R2505 10K
R2517 100K
100KR2516
R2502 10K
TAPE_RCH_OUT
TAPE_LCH_OUT
MPORT_RCH
TUNER_LCH
TUNER_RCH
MPORT_LCH
C2506
2200P
1KR4121
47KR3122
47KR3129
C2505
2200P
220P
C2508
220P
C2509
R2509
18K
R2508
18K
R2503
18K
1
C2501
R2504
18K 220P
C2503
C2500
1
C2502
220P
R2530 2.2K
C2525 0.015
C2531 0.015
0.015C2524
R4164
22K
C4177
0.1
R4163
22K
2
3
1
5
4
6
B1HBECA00004
Q4102
MUTING
50V1
C4178
C4176
0.1
1
C4141
R4125
10K
R2531 2.2K
50V0.1
C2538
R2532
10K
R2535
10K
R2533
2.2K
C2526 0.015
0.15C2527
0
C2530 0.15
0.15C2528 0.15C2529
ASP_CLK
C2523 47P
ASP_DATA
C2532 47P
18K
R2506
C2504
1
18K
R2507
16V47C2521
C2518
1
C2517
220P
18K
R2520
18K
R2521
1
C2514
2
131
726
825
5
429
28
627
17
18
15
16
13
11
9
10
12 21
20
23
24
22
14 19
330
32
C1BB00000732
ASP
IC2500
C2516
220P
220P
C2507 220P C2511
C2510
1
R4132 R4136
R4127
10K
0
R4133
R4134 C4142
1
C2534 50V0.33
16V330C2533
R4123
0
R2536
100
C2536 50V0.1
A9V
R4135
22K
22K
R4131
3.9K
3.9K
47PC2537
R2534
2.2K C2535
47P
REC_LCH_IN
MUTE_A
REC_RCH_IN
CD_LCH
AGND
A1
MPORT_LCH MNF2
SEL2OUT MOUT1
VIN1 REC2SEL1OUT REC1
VIN2 MNF1
C1
C2
B1
B2
E1
E2
D2
GND
FILTER
D1
TAPE_RCH
TUNER_LCH
CD_LCH
CD_RCH
TUNER_RCH
A2
TAPE_LCH
S1
SC
BNF1
BOUT2
BNF2
BOUT1
VCC
CAP
RIGHT
LEFT
MOUT2
MPORT_RCH
3.3KR5935
3.3KR5934
R4124
1K
2700P
C4138
R4122
1K
2700P
C4137
R4129
3.3K
C4140
0.12
3.3K
R4128
C4139
0.12
C2515 0.15
C2519 0.15
C2522 0.15
C2520 0.15

16
6.2. MAIN CIRCUIT (2/6)
15 16 17 18 19 20 21 22 23 24 25 26 27 28
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 3
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (1/6)
TO MAIN
SECTION (5/6)
TO MAIN
SECTION (3/6)
P1
2
4
3
1
P1
AA
P1
AB
D
TO
PANEL CIRCUIT
(ZJ903*)
IN SCHEMATIC
DIAGRAM - 9
: FM/AM SIGNAL LINE: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
5
10K
R4159
10K
R4158
L4108
J0JBC0000019
L4107
J0JBC0000019
L4106
J0JBC0000019
R4156
220
R4157
220
7
6
3
2
4
1
5
JK4101
PHONES
C4146
16V10 C4154 25V3300 C4187 25V2200
PGND
FP4100
5A
C4145
25V100
C4185
16V10
C4186
16V10
DGND
TUNER_GND
MUTE_A
M+9VGND
2
1
4
3
CN4104
R-
R+
L+
L-
13851234 67 9101112 14
IC4101
C1BA00000420
POWER AMPLIFIER
R4165 4.7K C4120 16V47
2.2
R4143
0
R4126
R4146
2.2
C4143
2700P
C4144
2700P
C4157
0.22
R4148
2.2
C4163
0.22
C4156
0.22
2.2
R4147 C4161
0.22
12VCC STDBY 12VCC PWRGND LCH_IN LOUT(+) LOUT(-) PWRGND ROUT(+) ROUT(-) RCH_IN RIP_FIL PRE_GND SIGNAL MUTE
0.1
C4152
R4161
22K R4162
22K
2
3
1
5
4
6
MUTING
B1HBECA00004
Q4109

17
6.3. MAIN CIRCUIT (3/6)
29 30 31 32 33 34 35 36 37 38 39 40 41 42
A
C
D
B
E
G
H
F
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 4
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (6/6)
TO MAIN
SECTION (2/6)
P1
A
TO
CD SERVO
CIRCUIT (CN7002)
IN SCHEMATIC
DIAGRAM - 1
D
TO
PANEL CIRCUIT
(ZJ900*)
IN SCHEMATIC
DIAGRAM - 9
1
22
C
TO
DECK CIRCUIT
(JW830*)
IN SCHEMATIC
DIAGRAM - 8
J
TO
MUSIC PORT
CIRCUIT (CN904*)
IN SCHEMATIC
DIAGRAM - 11
: FM/AM SIGNAL LINE
: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
K
TO
USB CIRCUIT
(P901)
IN SCHEMATIC
DIAGRAM - 12
22
1
STBY3.3V
MPORT_LCH
MPORT_RCH
R2538 0
2.2K
R5913
MOTOR_ON
LCD_ON
Q4116
B1ACCF000094
47K
R5921
AGND
M+9VGND
R5923
0B1GBCFJN0033
POWER SUPPLY
SWITCH
Q4117
RM_IN
RMT_ON
LCD_CLK
Q2103
B1GDCFNN0007
POWER SUPPLY
REC_LCH_IN
3
1
2
CN4105
R2100 0
REC_RCH_IN
6
8
9
7
2
1
4
5
3
10
CN2104
TAPE_RCH_OUT
A9V
TAPE_LCH_OUT
R2108
4.7KR2109
4.7K
USB_SDA
R2110 4.7K
USB_IRQ
3.3V
USB_SCL
100R2103 100R2106
100R2105 BLKCK
CD_MDATA
STAT
CD_MCLK
CD_MLD
PGND
100R2107 100R2104 CD_RST
B0EAKM000117
D2104 B0EAKM000117 D2105
AGND
R2111 0
DGND
L2102 J0JKB0000020
W1093 J0JKB0000020
R2102 100
1000P
C2103
CD_RCH
CD_LCH
C2101
1000P C2102
6
8
9
7
2
1
4
5
3
10
CN2105
6
5
8
9
11
12
10
18
15
17
16
20
19
13
14
7
2
1
4
3
22
21
CN2101
REST_SW
LOADING
REC_H
KEY2
KEY1
LCD_CE
LCD_DI
TAPE_L
CD_OPEN_SW
R_IN
M+9VGND
AGND
TAPE_L
M+9V
L_IN
REC_H
AGND
MPORT_LCH
MPORT_RCH
9V
L_OUT
R_OUT
LOADING
PGND
STAT
CD_UNLOAD
BLKCK
CD_RST
CD_DGND
ST_IN
CD_MLD
CD_3.3V
CD_MDATA
ST_CLK
CD_R
CD_3.3V
CD_L
ST_REQ
CD_MCLK
CD_AGND
TX (NC)
REST_SW
LD_SW/CLDCK
3.3V
RMT_P
KEY2
LCD_CE
LCD_CLK
BU3.3V
LCD_DI
RMT_ON
DGND
KEY1
CD_7.5V
1000P
C2121
0.1
TERR
D5V
MMOD
USB_RST
VERR
CN2100
6
5
8
9
11
12
10
18
15
17
16
20
19
13
14
7
2
1
4
3
22
21
DGND
USB5V
VERR
USB_SCL
USB_IRQ
DGND
DGND
CD_CLK
CD_DATA
STIN
DGND
D3.3V
TERR
MMOD
STREQ
STCLK
USB_RST
CD_MLD
CD_STAT
CD_RST
DGND
USB_SDA
R5936 1K
R5937 4.7K
R5931 0

18
6.4. MAIN CIRCUIT (4/6)
I
1 2 3 4 5 6 7 8 9 10 11 12 13 14
K
L
J
M
O
P
N
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 5
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (5/6)
TO MAIN
SECTION (1/6)
P1
: FM/AM SIGNAL LINE: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
22KR18
X2
H0A750200020 39K
R30 C34
27P
R29
1K
R22 10K
R20 10K
R17 10K
C29
1000P
C33 100P
PLL_DO
TUNER_GND
L8
J0JKB0000020
D5V L200
J0JKB0000020
C294
6.3V220
3.3V
C40
6.3V100
330P
C41
PLL_CLK
R23 22K
C36
22P
C39
1000P
R24 22K R25 22K
PLL_DI
PLL_CE
A9V
C35 100P
100PC38
C37 100P
R45 56K C30 50V1
R46 56K C31 50V1
TUNER_RCH
TUNER_LCH
R11 3.3K
CT51
RCVTZ11F
C50
0.047
C5 0.047 C4 16V100
C47
10P
C23
16V100
C28
1000P C26
0.01
R16
10K
R8
10K
R6
100K
L5
G0ZZ00002453
R4 100K
C10
0.01 C8
7P
R3
3.3K
3
1
2
D2
B0CDAB000019
C7
1000P
3
1
2
D3
B0CDAB000019
R2
0
C11
1000P 15P
C13
R7
100K
R9
0
R31
4.7K
C43
0.047
C9
0.01
C44
0.022
C17
50V3.3
C46
2200P
C16
15P
C14
330P
R10 100K
D4
B0ACCK000005
1.5K
R12
C12
0.047
R37
0
R13
3.3K
C42
220P
4
G2
G1
6
2
3
1
G2A101C00010
L7
3
1
2
B0CDAD000010
D1
C6
1000P
10K
R1
C3
0.033
R28
100K
C1 47P
X1 J0B1075A0121
312
CF1
J0B1075A0129
C19 50V1
C15
0.047
C48 0
7
5
G1
6
G2
8
1
3
4
2
G2CAEB000003
L51
C22 50V0.47
C18
0.01
4.7K
R14
10V22
C24
22
R5 C2
10P L3
RLQY30S1W
L1
RLQY30S1W
C32
50V4.7
19
18
20 2823 2422 2725 26 3231 3534 363329 3021
2116 14 12 911 10131517 674538
IC1
C1BB00001120
TUNER
0
R33
46
312
T1
G2BAC0000051
312
CF2
J0B4503A0074
0.018C25 0.018C27
C20
6.3V100
C21 50V1 A-IN
A-OUT
AM
AGC
VDD
MPX-IN
DET-OUT
LOW-CUT
XIN
XOUT
PD
PDET IF-IN CE VSS ROUT FMDET DI LOUT DO CL PCOMP VCC1 REG GND1 FM-MIX AM AM-MIX
FM
GND2
RF-IN
RF-OUT
VCC2
FM-OSC
AM-OSC
PRINT_COIL
FM
AM
B01 B02
FM
PRINT_COIL
RF-IN IF-IN
8
TL
1
TL
11
TL
12
TL
13
TL
6
TL
2
TL
10
TL 9 TL
5
TL
4
TL
3
TL
7
TL
16
TL
TELESCOPIC
ANTENNA
C57
0.047
C56
1000P
AGND

19
6.5. MAIN CIRCUIT (5/6)
15 16 17 18 19 20 21 22 23 24 25 26 27 28
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 6
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (4/6)
TO MAIN
SECTION (2/6)
TO MAIN
SECTION (6/6)
P1
AA
AB
P1
G
TO
POWER CIRCUIT
(JW4101*)
IN SCHEMATIC
DIAGRAM - 10
G
TO
POWER CIRCUIT
(JW4102*)
IN SCHEMATIC
DIAGRAM - 10
: FM/AM SIGNAL LINE: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
R5943
0
D5V
D4102
B0ACCK000005
16V100
B1BCCG000002
Q4107
10K
R4137
Q4108
B1ACCF000094
REGULATOR
POWER CONTROL
R4144 47K
B1ADCE000012
SWITCH
Q4118
R4109 22
D4107 B0ACCK000005 51
4
6
1
3
4
2
8
7
CN4100
R4153 1.5 L4105
J0JKB0000020
R4149 1.5
R4154 1.5
C4160 0.01
DC_DET2
PCONT2
A9V
HALT
DCH
C4151
R5914
1K
Q4106
B1ABCF000176
2.2K
R5915
31
2
D4101
B0ADFJ000004
D4100
B0ADFJ000004
3
12
B0BC9R1A0218
DZ4100
Q4119
B1GBCFJN0033
POWER CONTROL
INVERTER
R5928 47K
2.2KR4142
R5920 2.2K R4145 2.2K R5917 2.2K C4158 16V10
BU3.3V
PCONT1
2.2K
R4141
0
R4139
B1ADCE000012
Q4105
1
C4148
B1GBCFJN0033
POWER SUPPLY
POWER CONTROL
QR4104
0.1C4117
C4119 0.1 C4111 25V470
213
C0CBABE00040
VOLTAGE REGULATOR
IC4100
C4116 16V100
R5925
47K
B0ACCK000005D4106
B0ACCK000005D4104
D4103 B0ACCK000005
1
C4149
C4153
16V47
312
45
C0CBABE00023
IC4102
R4152
39K
18K
R4151
C4168
0.33
L4104
J0JKB0000020
C4169
42135
IC4103
C0DAEJG00001
VOLTAGE REGULATOR
R4150
100K
C4162
16V100
3.3V
STBY3.3V
VREF+
HALT
A9V
VCC
VCC
PCONT2
SYS6V
MAIN_GND
PGND
12V BATTERY
VINVOUT GND
VSS
VOLTAGE REGULATOR
VIN
VOUT
NC
NC
25V220
VCC OUT CTL GND C
C4150 0.1

20
6.6. MAIN CIRCUIT (6/6)
I
K
L
J
M
O
P
N
29 30 31 32 33 34 35 36 37 38 39 40 41 42
B
MAIN CIRCUIT
SCHEMATIC DIAGRAM - 7
RX-D55EE MAIN CIRCUIT
2/6 3/6
5/6
1/6
4/6 6/6
TO MAIN
SECTION (5/6)
TO MAIN
SECTION (3/6)
P1
: FM/AM SIGNAL LINE: FM SIGNAL LINE: +B SIGNAL LINE : AM SIGNAL LINE: MUSIC PORT AUDIO INPUT SIGNAL LINE : AUDIO OUTPUT SIGNAL LINE: CD/TAPE AUDIO INPUT SIGNAL LINE
USB_IRQ LCD_ON RM_IN
100R4168 100R4167
R2183 100 R2148 100
10KR2146
X2101
H0A327200097
18PC2123 22PC2120
ASP_CLK
C4173 47P
1
4
2
3
IC2101
C0EBE0000124
RESET
R5908
0
R5903
330K
DC_DET2
R5924
100K
L2104
100
R5916 1K
R2158
100K
R2101
R2177
100K B0ACCK000005
D4105
DCH
STBY3.3V
BU3.3V
DGND
470K
R2175
R2165 100
R2160 100
R2164 100
100
R2162 100
R2159
R2161 100
100R2163
C2131
6.3V100
C4167
6.3V100
G0C3R3JA0027
B1GBCFJN0033
DC DETECT
QR4105
100KR2176
HALT
USB_SCL
CD_MCLK
BLKCK
STAT
CD_MDATA
USB_SDA
CD_MLD
PLL_CLK
PLL_DI
LOADING
R2152 2.2K
100K
R2153
PLL_CE
PLL_DO
R2151 1K
100R2170
R2155 100
100R2156 1KR2169 D2101 B0ACCK000005
D2100 B0ACCK000005
1KR2166 1KR2167
R2171
56K
R2168 4.7K
REST_SW
R2172
3.3K
CD_RST
CD_OPEN_SW
R2174
56K
100R2149
1000PC2133
R2150 100
ASP_DATA
R2140
1M
C2119 56P 56PC2118
R2138 100
4.7KR2137
39PC2116
1K
R2141
1K
R2139
H4Z8004AA001
X2100
56PC2115
R2147
100K
R2118
100K
220K
R2115 100K R2112
BU3.3V
MUTE_A
R2119
100K
REC_H
2
4
3
1
6
5
CN2102
FOR SOFTWARE WRITING
10K
R5932
10K
R5933
0
R2145
10K
R5926 100K R2125
A9V
4700P
C2104 1000P C2105 1000P C2106 2200P C2109
KEY2
KEY1
R2133 100 R2143 220K
LCD_CE 100R2181
PCONT1
RMT_ON
1KR2144 1KR2117
1KR2184 1KR2142
1KR2113 1KR2114
MOTOR_ON
TAPE_L
R2124
100K C2130 6.3V100
STBY3.3V
PCONT2 1KR2127
1KR2126
220PC2108
220PC2107
R2132 100
100
R2131
C2111 220P
C2113 220P
220PC2112
LCD_CLK LCD_DI
47PC4172
79
77
76
78 49
47
48
50
74 7172 6768 56 5558 57 52 5154 536566 6162 596064 6370 697375
10
879 1211
99
100
95
94
96
97
90
91
89
93
92
98
465213
81
82
80
86
87
88
84
83
85
45
19171514 16 18
43
232120 22
41
24
39
37
33
35
34
29
30
27
26
28
32
31
36
38
25
40
42
44
13
46
IC2100
RFKWMD55EG
VREF+
LCD_CE NC
NC NC
LCD_CLK/OCD_SCL
NC NC
[1] PCONT1
[2] PCONT2
LCD_DI/QCD_SDA NC NC
NC
VSS
ASP_DATA
ASP_CLK
NC OSC1(8MHz) OSC2(8MHz) GND
NC
MBP2 NC
OUT VDD
VSS NC
STAT
CD_MCLK
USB_REQ NRST VSS BU3.3V XO(32kHz) XI(32kHz) USB_RST MMOD
[26] HALT
[28] DC_DET
[27] DC_DET2
INTERNAL OUTPUT (1.8V) TERR/FLAG
NC
BLKCK
VERR/CTRL RM_IN
CD_MDATA
VSS
NC
1.8V
CLOSE_L
CD_MLD
MICRO PROCESSOR
USB_CLK
NC
NC NC
FAN_SIGNAL
LCD_ON
PLL_CE
PLL_CLK
FAN_CTRL
[48] MODEL_SEL_2
NC NC NC NC NC
NC
[50] PLL_D0
[49] PLL_DI
REST_SW
OPEN_H
CD_OPEN_SW
CD_RST
[47] MODEL_SEL_1
USB_SDA
NC MBP1
VSS
OCD_SCL
STBY3.3V
OCD_SDA
MMOD
MICONRST
NC
REC_H
NC
MOTOR_ON
TAPE_L
NC
NC
[76] NC
NC
VDD
MUTE_A
NC
NC
GND
KEY2
REGION
NC
NC
RMT_ON
NC
NC
NC
P_DET
KEY1
NC
VREF+
100K
R2116
2100
TL 2101 TL 2102 TL
2103
TL 2104 TL 2105 TL
2106
TL 2107 TL 2108 TL
2109
TL 2110 TL
2115
TL
2116
TL
2114
TL
150K
R5938
R2121
56K
100PC2124
0.1
C2126
100K
R2157
C2132
1000P
R2136 3.3K R2135 3.3K
Q2102
B1ABDF000026
INVERTER
B1ABDF000026
INVERTER
Q2101
1000P
C2117
1000P
C2114
R2180 100K
R5929
10K
USB_RST TERR VERR MMOD
0.1
C2110
C2125 0.1