DOWNLOAD Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG Service Manual ↓ Size: 11.51 MB | Pages: 127 in PDF or view online for FREE

Model
SC-HC37EC SC-HC37EE SC-HC37EF SC-HC37EG
Pages
127
Size
11.51 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / COMPACT STEREO SYSTEM
File
sc-hc37ec-sc-hc37ee-sc-hc37ef-sc-hc37eg.pdf
Date

Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG Service Manual ▷ View online

PSG1203005CE
Compact Stereo System
Model No.
SC-HC37EC
SC-HC37EE
SC-HC37EF
SC-HC37EG
Product Color:  (K)...Black Type
(S)...Silver Type
(W)...White Type (For EC/EF/EG only)
(R)...Red Type (For EC/EG only)
TABLE OF CONTENTS
PAGE
PAGE
1 Safety Precautions----------------------------------------------- 3
1.1. General Guidelines---------------------------------------- 3
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Protection Circuitry ---------------------------------------- 4
1.4. Caution For Fuse Replacement------------------------ 4
1.5. 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 --------------------- 9
3 Service Navigation ----------------------------------------------10
3.1. Service Information --------------------------------------10
4 Specifications ---------------------------------------------------- 11
5 General/Introduction -------------------------------------------12
5.1. Inserting or removing media ---------------------------12
5.2. CD, iPod/iPhone & USB playback operations-----13
6 Location of Controls and Components------------------ 14
6.1. Main Unit & Remote Control Key Button
Operations ------------------------------------------------- 14
7 Instation Instructions -------------------------------------- 15
7.1. Connections ----------------------------------------------- 15
8 Service Mode ----------------------------------------------------- 16
8.1. Self Diagnostic Mode ----------------------------------- 16
8.2. Self Diagnostic Function Error Code ---------------- 17
8.3. Doctor Mode Table--------------------------------------- 18
8.4. Sliding Door Operation --------------------------------- 24
9 Service Fixture & Tools --------------------------------------- 25
10 Disassembly and Assembly Instructions--------------- 26
10.1. Disassembly flow chart --------------------------------- 27
10.2. Types of Screws------------------------------------------ 28
10.3. Main Parts Location Diagram ------------------------- 28
10.4. Disassembly of Base Stand Assembly ------------- 29
10.5. Replacement of Door Assembly---------------------- 30
10.6. Replacement of Front Ornament Unit (L) & (R)--- 32
2
10.7. Disassembly of Front Panel Block ------------------- 33
10.8. Replacement of iPod Block ---------------------------- 35
10.9. Disassembly of Interlock Switch P.C.B.------------- 40
10.10. Disassembly of Remote Sensor P.C.B.------------- 42
10.11. Replacement of Gear Box Assembly --------------- 45
10.12. Disassembly of Motor P.C.B. -------------------------- 47
10.13. Disassembly of Belt & Pulley Gear ------------------ 48
10.14. Disassembly of Motor Assembly --------------------- 49
10.15. Disassembly of Centering Spring & Centering
Stopper------------------------------------------------------ 50
10.16. Disassembly of Lever Spring, Trigger Lever &
Driver Gear A --------------------------------------------- 52
10.17. Disassembly of SW Lever, Relay Gear &
Driver Gear B --------------------------------------------- 53
10.18. Disassembly of Shutter & Shutter Spring ---------- 55
10.19. Disassembly of Upper Guide Rail & Top
Ornament--------------------------------------------------- 56
10.20. Disassembly of Bottom Ornament ------------------- 57
10.21. Disassembly of Lower Guide Rail-------------------- 58
10.22. Disassembly of SMPS P.C.B. ------------------------- 59
10.23. Replacement of Diode (D1700) ---------------------- 62
10.24. Disassembly of Panel P.C.B. & Button
Ornament Unit -------------------------------------------- 63
10.25. Disassembly of Button P.C.B. ------------------------- 64
10.26. Disassembly of Button Ornament -------------------- 65
10.27. Disassembly of CD Mechanism ---------------------- 66
10.28. Disassembly of CD Servo P.C.B.--------------------- 67
10.29. Disassembly of Jack Lid-------------------------------- 69
10.30. Disassembly of Main P.C.B. --------------------------- 70
10.31. Disassembly of Passive Radiator (SP3 &
SP4) --------------------------------------------------------- 73
10.32. Disassembly of Front Speaker (SP1) --------------- 73
10.33. Disassembly of Front Speaker (SP2) --------------- 76
10.34. Disassembly of Passive Radiator (SP5) ----------- 78
10.35. Disassembly of Passive Radiator (SP6) ----------- 78
11 Service Position ------------------------------------------------- 79
11.1. Checking & Repairing of SMPS P.C.B. ------------- 79
11.2. Checking & Repairing of Panel P.C.B. -------------- 80
11.3. Checking & Repairing of CD Servo P.C.B.--------- 82
11.4. Checking & Repairing of Main P.C.B. (Side B) --- 85
11.5. Checking & Repairing of Main P.C.B. (Side A) --- 85
12 Block Diagram --------------------------------------------------- 91
12.1. SERVO & SYSTEM CONTROL (1/2) BLOCK
DIAGRAM -------------------------------------------------- 91
12.2. SERVO & SYSTEM CONTROL (2/2) BLOCK
DIAGRAM -------------------------------------------------- 92
12.3. IC TERMINAL CHART---------------------------------- 93
12.4. AUDIO BLOCK DIAGRAM ---------------------------- 94
12.5. POWER SUPPLY (1/2) BLOCK DIAGRAM ------- 95
12.6. POWER SUPPLY (2/2) BLOCK DIAGRAM ------- 96
13 Wiring Connection Diagram --------------------------------- 97
14 Schematic Diagram--------------------------------------------- 99
14.1. Schematic Diagram Notes ----------------------------- 99
14.2. CD SERVO CIRCUIT (1/2) -------------------------- 101
14.3. CD SERVO CIRCUIT (2/2) -------------------------- 102
14.4. MAIN CIRCUIT (1/4) ---------------------------------- 103
14.5. MAIN CIRCUIT (2/4) ---------------------------------- 104
14.6. MAIN CIRCUIT (3/4) ---------------------------------- 105
14.7. MAIN CIRCUIT (4/4) ---------------------------------- 106
14.8. iPod & REMOTE SENSOR CIRCUIT ------------- 107
14.9. PANEL, INTERLOCK SWITCH, MOTOR &
BUTTON CIRCUIT ------------------------------------- 108
14.10. SMPS CIRCUIT ----------------------------------------- 109
15 Printed Circuit Board----------------------------------------- 110
15.1. CD SERVO P.C.B.-------------------------------------- 110
15.2. MAIN P.C.B. (Side A) ---------------------------------- 111
15.3. MAIN P.C.B. (Side B) ---------------------------------- 112
15.4. iPod & REMOTE SENSOR P.C.B. ----------------- 113
15.5. PANEL, INTERLOCK SWITCH & MOTOR
P.C.B. ------------------------------------------------------ 114
15.6. BUTTON & SMPS P.C.B. ----------------------------- 115
16 Appendix Information of Schematic Diagram ------- 117
16.1. Voltage Measurement & Waveform Chart -------- 117
16.2. Illustration of IC’s, Transistors and Diodes ------- 123
16.3. Terminal Function of IC’s ----------------------------- 124
17 Exploded View and Replacement Parts List---------- 125
17.1. Exploded View and Mechanical replacement
Parts List -------------------------------------------------- 125
17.2. Electrical Replacement Parts List ------------------ 131
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
Disconnect AC power, discharge unit AC Capacitors as such C1702, C1710, C1725, C1727, and C1728 through a 10W, 1W resis-
tor to ground.
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 220V to 240V, at 50Hz in NO SIGNAL mode (at volume min in FM Tuner mode) should be ~200 mA.
1.3.
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.
1.4.
Caution For Fuse Replacement
Page of 127
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Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG Service Manual ▷ Download

  • DOWNLOAD Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG Service Manual ↓ Size: 11.51 MB | Pages: 127 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG Audio. Information contained in Panasonic SC-HC37EC / SC-HC37EE / SC-HC37EF / SC-HC37EG 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.