SC-HC15EB, SC-HC15EG, SC-HC15EP - Panasonic Audio Service Manual (repair manual)

sc-hc15eb, sc-hc15eg, sc-hc15ep service manual
Model
SC-HC15EB SC-HC15EG SC-HC15EP
Pages
118
Size
12.93 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / COMPACT STEREO SYSTEM
File
sc-hc15eb-sc-hc15eg-sc-hc15ep.pdf
Date

Read Panasonic SC-HC15EB / SC-HC15EG / SC-HC15EP Service Manual online

PSG1103025CE
Compact Stereo System
Model No.
SC-HC15EB
SC-HC15EG
SC-HC15EP
Product Color:   (K)...Black Type
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Caution for AC Cord (For EB only)-------------------- 4
1.3. Before Repair and Adjustment ------------------------- 5
1.4. Caution For Fuse Replacement------------------------ 5
1.5. Protection Circuitry ---------------------------------------- 5
1.6. Safety Part Information----------------------------------- 5
2 Warning -------------------------------------------------------------- 6
2.1. Prevention of Electro Static Discharge (ESD)
to Electrostaticy Sensitive (ES) Devices---------- 6
2.2. Precaution of Laser Diode------------------------------- 7
2.3. Service caution based on Legal restrictions -------- 8
2.4. Handling Precaution for Traverse Deck-------------- 9
3 Service Navigation ----------------------------------------------10
3.1. Service Information --------------------------------------10
4 Specifications ---------------------------------------------------- 11
5 Location of Controls and Components ------------------12
5.1. Main Unit & Remote Control Key Button
Operations ------------------------------------------------- 12
5.2. Connections ----------------------------------------------- 13
5.3. Disc operations ------------------------------------------- 13
5.4. USB Operation-------------------------------------------- 14
6 Self Diagnostic and Doctor Mode Setting -------------- 15
6.1. Self Diagnostic Mode ----------------------------------- 15
6.2. Self Diagnostic Function Error Code ---------------- 16
6.3. Doctor Mode Table--------------------------------------- 17
6.4. Sales Demonstration Lock Function Mode -------- 23
7 Service Fixture & Tools --------------------------------------- 24
8 Disassembly and Assembly Instructions--------------- 25
8.1. Disassembly flow chart --------------------------------- 26
8.2. Types of Screws------------------------------------------ 27
8.3. Main Parts Location Diagram ------------------------- 27
8.4. Disassembly of Net Frame Assembly--------------- 28
8.5. Disassembly of Base Stand Assembly ------------- 30
2
8.6. Replacement of CD Door Ornament ---------------- 30
8.7. Replacement of CD Door Base----------------------- 32
8.8. Disassembly of Front Cabinet Assembly----------- 35
8.9. Disassembly of LCD Window ------------------------- 37
8.10. Disassembly of Gear Box Assembly ---------------- 39
8.11. Replacement of Rack Top & Slider Top ------------ 42
8.12. Disassembly of Bridge P.C.B. & Door Switch
P.C.B.-------------------------------------------------------- 44
8.13. Replacement of Door Shaft & Slider Bottom ------ 46
8.14. Replacement of Timing Gear Shaft ------------------ 48
8.15. Disassembly of Top Ornament Unit & Button
P.C.B.-------------------------------------------------------- 49
8.16. Disassembly of IR P.C.B. & Panel P.C.B. ---------- 50
8.17. Disassembly of CD Mechanism ---------------------- 52
8.18. Disassembly of CD Servo P.C.B.--------------------- 53
8.19. Disassembly of Jack Lid-------------------------------- 54
8.20. Disassembly of Tuner P.C.B. -------------------------- 56
8.21. Disassembly of SMPS P.C.B. ------------------------- 57
8.22. Replacement of Diode (D702) ------------------------ 59
8.23. Replacement of Transistor (Q701)------------------- 61
8.24. Disassembly of Speaker Unit ------------------------- 62
8.25. Disassembly of Main P.C.B. --------------------------- 63
9 Service Position ------------------------------------------------- 65
9.1. Checking & Repairing of Panel P.C.B. -------------- 65
9.2. Checking & Repairing of CD Servo P.C.B.--------- 66
9.3. Checking & Repairing of Main (Side B) P.C.B. --- 68
9.4. Checking & Repairing of Main (Side A) P.C.B. --- 68
9.5. Checking & Repairing of SMPS P.C.B. ------------- 72
10 Voltage Measurement & Waveform Chart--------------- 74
10.1. CD SERVO P.C.B. --------------------------------------- 74
10.2. MAIN P.C.B. (1/3) ---------------------------------------- 75
10.3. MAIN P.C.B. (2/3) ---------------------------------------- 76
10.4. MAIN P.C.B. (3/3) ---------------------------------------- 76
10.5. PANEL P.C.B. --------------------------------------------- 77
10.6. SMPS P.C.B. ---------------------------------------------- 77
10.7. TUNER P.C.B. -------------------------------------------- 77
10.8. Waveform Chart ------------------------------------------ 78
11 Illustration of IC’s, Transistors and Diodes ------------ 79
12 Overall Simplified Block -------------------------------------- 81
12.1. Voltage / Current / Ground Diagram----------------- 81
12.2. Control & Signal Diagram ------------------------------ 82
13 Block Diagram --------------------------------------------------- 83
13.1. SERVO/SYSTEM CONTROL BLOCK
DIAGRAM -------------------------------------------------- 83
13.2. IC TERMINAL CHART---------------------------------- 84
13.3. AUDIO BLOCK DIAGRAM ---------------------------- 85
13.4. POWER SUPPLY (1/2) BLOCK DIAGRAM ------- 86
13.5. POWER SUPPLY (2/2) BLOCK DIAGRAM ------- 87
14 Wiring Connection Diagram --------------------------------- 88
15 Schematic Diagram--------------------------------------------- 89
15.1. Schematic Diagram Notes ----------------------------- 89
15.2. CD SERVO CIRCUIT (1/2) ---------------------------- 91
15.3. CD SERVO CIRCUIT (2/2) ---------------------------- 92
15.4. MAIN CIRCUIT (1/4) ------------------------------------ 93
15.5. MAIN CIRCUIT (2/4) ------------------------------------ 94
15.6. MAIN CIRCUIT (3/4) ------------------------------------ 95
15.7. MAIN CIRCUIT (4/4) ------------------------------------ 96
15.8. MAIN (USB), TUNER & MOTOR CIRCUIT-------- 97
15.9. PANEL, IR, DOOR SWITCH, BRIDGE &
BUTTON CIRCUIT--------------------------------------- 98
15.10. SMPS CIRCUIT ------------------------------------------ 99
16 Printed Circuit Board----------------------------------------- 100
16.1. CD SERVO P.C.B.-------------------------------------- 100
16.2. MAIN P.C.B. (Side A) ---------------------------------- 101
16.3. MAIN P.C.B. (Side B) ---------------------------------- 102
16.4. PANEL, IR, DOOR SWITCH, BRIDGE &
BUTTON P.C.B. ----------------------------------------- 103
16.5. TUNER, MOTOR & SMPS P.C.B. ------------------ 104
17 Terminal Function of IC’s ----------------------------------- 105
17.1. IC801 (RFKWMHC25M0) MICRO
PROCESSOR IC --------------------------------------- 105
18 Exploded View and Replacement Parts List---------- 107
18.1. Exploded View and Mechanical replacement
Parts List -------------------------------------------------- 107
18.2. Electrical Replacement Parts List ------------------ 113
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.
Caution for AC Cord (For EB only)
Page of 118
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Here you can read online and download Panasonic SC-HC15EB / SC-HC15EG / SC-HC15EP Service Manual in PDF. SC-HC15EB / SC-HC15EG / SC-HC15EP service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic SC-HC15EB / SC-HC15EG / SC-HC15EP Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.