Read Panasonic RF-800UGA / RF-800UGS Service Manual online
PSG1210003CE
FM-MW-SW1-SW2 Portable Radio
Model No.
RF-800UGA
RF-800UGS
RF-800UGS
Product Color : (K)...Black Type
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Protection Circuitry ---------------------------------------- 3
1.3. Safety Part Information----------------------------------- 3
1.2. Protection Circuitry ---------------------------------------- 3
1.3. Safety Part Information----------------------------------- 3
2 Warning -------------------------------------------------------------- 4
2.1. Prevention of Electro Static Discharge (ESD)
to Electrostaticy Sensitive (ES) Devices---------- 4
2.2. Service caution based on Legal restrictions -------- 5
3 Specifications ----------------------------------------------------- 6
4 Location of Controls and Components ------------------- 7
4 Location of Controls and Components ------------------- 7
4.1. Listening to Radio (FM, MW, SW1, SW2) ----------- 7
4.2. Playing from Music device using music port-------- 8
4.3. Playing from USB device -------------------------------- 9
4.2. Playing from Music device using music port-------- 8
4.3. Playing from USB device -------------------------------- 9
5 Instation Instructions ---------------------------------------10
5.1. Connections------------------------------------------------10
6 Disassembly and Assembly Instructions ---------------11
6.1. Disassembly flow chart----------------------------------12
6.2. Types of Screws ------------------------------------------12
6.3. Main Parts Location Diagram--------------------------12
6.4. Disassembly of Rear Cabinet Block -----------------13
6.2. Types of Screws ------------------------------------------12
6.3. Main Parts Location Diagram--------------------------12
6.4. Disassembly of Rear Cabinet Block -----------------13
6.5. Disassembly of Battery P.C.B. ------------------------ 14
6.6. Disassembly of Jack P.C.B. --------------------------- 15
6.7. Disassembly of Front Cabinet Block ---------------- 16
6.8. Disassembly of Speaker Unit ------------------------- 16
6.9. Disassembly of Tuner P.C.B.-------------------------- 17
6.6. Disassembly of Jack P.C.B. --------------------------- 15
6.7. Disassembly of Front Cabinet Block ---------------- 16
6.8. Disassembly of Speaker Unit ------------------------- 16
6.9. Disassembly of Tuner P.C.B.-------------------------- 17
6.10. Disassembly of USB P.C.B. --------------------------- 19
7 Measurements and Adjustments (Tuner) --------------- 21
7.1. FM IF Alignment------------------------------------------ 21
7.2. RF Alignment---------------------------------------------- 22
7.2. RF Alignment---------------------------------------------- 22
8 Wiring Connection Diagram--------------------------------- 25
9 Schematic Diagram -------------------------------------------- 27
9 Schematic Diagram -------------------------------------------- 27
9.1. Schematic Diagram Notes ----------------------------- 27
9.2. TUNER CIRCUIT (1/2) --------------------------------- 29
9.3. TUNER CIRCUIT (2/2) --------------------------------- 30
9.4. USB CIRCUIT--------------------------------------------- 31
9.5. BATTERY & JACK CIRCUIT -------------------------- 32
9.2. TUNER CIRCUIT (1/2) --------------------------------- 29
9.3. TUNER CIRCUIT (2/2) --------------------------------- 30
9.4. USB CIRCUIT--------------------------------------------- 31
9.5. BATTERY & JACK CIRCUIT -------------------------- 32
10 Printed Circuit Board ------------------------------------------ 33
10.1. TUNER P.C.B. -------------------------------------------- 33
10.2. USB, BATTERY, JACK & SUPPORT P.C.B. ------ 34
10.2. USB, BATTERY, JACK & SUPPORT P.C.B. ------ 34
11 Appendix Information of Schematic Diagram --------- 35
2
11.1. Illustration of IC’s, Transistors and Diodes -------- 35
11.2. Terminal Function of IC --------------------------------- 36
11.2. Terminal Function of IC --------------------------------- 36
12 Exploded View and Replacement Parts List ----------- 37
12.1. Exploded View and Mechanical replacement
Parts List --------------------------------------------------- 37
12.2. Electrical Replacement Parts List -------------------- 40
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.
1.2.
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.
• 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:
"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.
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.
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.3.
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.
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.
Safety
Ref. No.
Part No.
Part Name & Description
Remarks
19
RKSN0018A-K
BACK CABINET
A1
RQT9727-G
O/I BOOK (En/Ar)
FP1
K5G502A00039
FUSE PROTECTOR
IP1
D4FB1R100026
FUSE PROTECTOR
4
2 Warning
2.1.
Prevention of Electro Static Discharge (ESD) to Electrostatically Sensi-
tive (ES) Devices
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).
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.
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
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
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).
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 :
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).