DOWNLOAD Panasonic RX-D50EE Service Manual ↓ Size: 6.18 MB | Pages: 94 in PDF or view online for FREE

Model
RX-D50EE
Pages
94
Size
6.18 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / PORTABLE STEREO CD SYSTEM
File
rx-d50ee.pdf
Date

Panasonic RX-D50EE Service Manual ▷ View online

PSG1004006CE
Portable Stereo CD System
Model No.
RX-D50EE
Product Color : (S)...Silver 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 Electrostaticy 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
4 Specifications ---------------------------------------------------- 11
5 Location of Controls and Components------------------ 12
5.1. Main Unit and Remote Control Key Button
Operations ------------------------------------------------- 12
5.2. Disc Information ------------------------------------------ 13
6 Self Diagnostic and Doctor Mode Setting -------------- 14
6.1. Self Diagnostic Mode ----------------------------------- 14
6.2. Doctor Mode ---------------------------------------------- 15
7 Service Fixture & Tools --------------------------------------- 19
8 Disassembly and Assembly Instructions--------------- 20
Notes: Please refer to the original service manual for: 
G CD Mechanism Unit (DLS6F), Order No. PSG1002024AE
2
8.1. Disassembly flow chart --------------------------------- 21
8.2. Main Parts Location Diagram ------------------------- 22
8.3. Disassembly of Top Cabinet Assembly ------------- 23
8.4. Disassembly of Music Port ---------------------------- 24
8.5. Disassembly of Front Panel Assembly ------------- 24
8.6. Disassembly of Panel P.C.B., Standby P.C.B.
and Volume P.C.B. --------------------------------------- 25
8.7. Disassembly of Woofer Speaker (SP1)------------- 26
8.8. Disassembly of Woofer Speaker (SP2)------------- 27
8.9. Disassembly of CD Lid---------------------------------- 27
8.10. Disassembly of Deck Mechanism Unit ------------- 28
8.11. Disassembly of Deck P.C.B.--------------------------- 30
8.12. Disassembly of Cassette Lid -------------------------- 30
8.13. Disassembly of Mecha Bottom Cover -------------- 32
8.14. Disassembly of Power P.C.B. ------------------------- 33
8.15. Disassembly of Main P.C.B. --------------------------- 35
8.16. Replacement of Transisor (Q4107)------------------ 36
8.17. Replacement of Power IC (IC4101) ----------------- 38
8.18. Disassembly of CD Mechanism Unit ---------------- 40
8.19. Disassembly of CD Servo P.C.B.--------------------- 40
8.20. Disassembly of Battery (1) P.C.B.-------------------- 41
8.21. Disassembly of Battery (2) P.C.B.-------------------- 42
9 Disassembly and Assembly of Traverse Unit --------- 43
9.1. Disassembling Procedures ---------------------------- 43
9.2. Assembling Procedure---------------------------------- 44
10 Service Position ------------------------------------------------- 46
10.1. Checking & Repairing Deck P.C.B. ------------------ 46
10.2. Checking & Repairing Panel P.C.B. ----------------- 46
10.3. Checking & Repairing Power P.C.B. ---------------- 47
10.4. Checking & Repairing Main P.C.B. ------------------ 47
10.5. Checking & Repairing CD Servo P.C.B. ------------ 49
11 Measurements and Adjustments -------------------------- 50
11.1. Tuner Section --------------------------------------------- 50
11.2. Deck Mechanism Section ------------------------------ 52
12 Voltage Measurement & Waveform Chart--------------- 53
12.1. CD SERVO P.C.B. --------------------------------------- 53
12.2. MAIN P.C.B. (1/2) ---------------------------------------- 54
12.3. MAIN P.C.B. (2/2) ---------------------------------------- 55
12.4. DECK P.C.B. ---------------------------------------------- 55
12.5. PANEL P.C.B. --------------------------------------------- 56
12.6. POWER P.C.B. ------------------------------------------- 56
12.7. Waveform Chart ------------------------------------------ 57
13 Illustration of IC’s, Transistors and Diodes ------------ 58
14 Wiring Connection Diagram --------------------------------- 59
15 Schematic Diagram Notes ----------------------------------- 61
16 Schematic Diagram--------------------------------------------- 63
16.1. CD SERVO CIRCUIT ----------------------------------- 63
16.2. MAIN CIRCUIT (1/6) ------------------------------------ 64
16.3. MAIN CIRCUIT (2/6) ------------------------------------ 65
16.4. MAIN CIRCUIT (3/6) ------------------------------------ 66
16.5. MAIN CIRCUIT (4/6) ------------------------------------ 67
16.6. MAIN CIRCUIT (5/6) ------------------------------------ 68
16.7. MAIN CIRCUIT (6/6) ------------------------------------ 69
16.8. DECK CIRCUIT------------------------------------------- 70
16.9. PANEL, VOLUME & STANDBY CIRCUIT --------- 71
16.10. POWER CIRCUIT---------------------------------------- 72
16.11. BATTERY (1), BATTERY (2) & MUSIC PORT
CIRCUIT---------------------------------------------------- 73
17 Printed Circuit Board ------------------------------------------ 74
17.1. CD SERVO & MUSIC PORT P.C.B.----------------- 74
17.2. MAIN P.C.B. ----------------------------------------------- 75
17.3. DECK, PANEL, VOLUME & STANDBY P.C.B.--- 76
17.4. POWER, BATTERY (1) & BATTERY (2)
P.C.B. ------------------------------------------------------- 77
18 Terminal Function of IC’s ------------------------------------ 79
18.1. IC7001 (MN6627954AMA) IC SERVO
PROCESSOR -------------------------------------------- 79
18.2. IC7002 (BA5948FPE2) IC 4CH Drive -------------- 80
18.3. IC2100 (RFKWMD45EG-W) MICRO
PROCESSOR -------------------------------------------- 80
19 Exploded View and Replacement Parts List  ---------- 83
19.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 83
19.2. Electrical Replacement Parts List ------------------- 89
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 1M
Ω and 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 1.5k
Ω, 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
RKHN0005A-H
HANDLE
401
RD-DAPX001-V
TRAVERSE UNIT
A2
K2CQ2CA00007
AC CORD 
A3
RQTX1037-R
O/I BOOK  (Ru/Ur)
PCB3
REPNT0063E
POWER P.C.B
(RTL)
L5901
ELF15N035AN
LINE FILTER
T5903
G4C4BAH00002
TRANSFORMER
Z5902
ERZVA5Z471
ZNR SURGE
F5901
K5D202BLA013
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
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  • DOWNLOAD Panasonic RX-D50EE Service Manual ↓ Size: 6.18 MB | Pages: 94 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Panasonic RX-D50EE in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic RX-D50EE Audio. Information contained in Panasonic RX-D50EE Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.