Read Panasonic SU-HTB520EB / SU-HTB520EG / SB-HWA520EB / SB-HWA520EG / SC-HTB520EB / SC-HTB520EG / SU-HTB520EGK / SB-HWA520EGK Service Manual online
PSG1103039CE
Home Theater Audio System
Model No.
SU-HTB520EB
SU-HTB520EG
SB-HWA520EB
SB-HWA520EG
SC-HTB520EB
SC-HTB520EG
SU-HTB520EG
SB-HWA520EB
SB-HWA520EG
SC-HTB520EB
SC-HTB520EG
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 SMPS Module & Fuse
1.2. Before Repair and Adjustment ------------------------- 4
1.3. Caution For SMPS Module & Fuse
Replacement------------------------------------------------ 4
1.4. Protection Circuitry ---------------------------------------- 4
1.5. Caution for AC Cord (For EB only)-------------------- 5
1.6. Safety Part Information----------------------------------- 6
1.7. Safety Instation Instructions ------------------------- 7
1.5. Caution for AC Cord (For EB only)-------------------- 5
1.6. Safety Part Information----------------------------------- 6
1.7. Safety Instation Instructions ------------------------- 7
2 Warning -------------------------------------------------------------- 8
2.1. Prevention of Electro Static Discharge (ESD)
to Electrostaticy Sensitive (ES) Devices ----------8
2.2. Service caution based on Legal restrictions --------9
3 Service Navigation --------------------------------------------- 10
3.1. Service Information -------------------------------------- 10
4 Specifications ---------------------------------------------------- 11
5 Location of Controls and Components------------------ 13
5 Location of Controls and Components------------------ 13
5.1. Main Unit Key Button Operations (SU-
HTB520)---------------------------------------------------- 13
5.2. Active Subwoofer (SB-HWA520)--------------------- 13
2
5.3. Remote Control Key Buttons Operation------------ 14
5.4. Connection to a TV -------------------------------------- 15
5.5. Connection from an HDMI compatible device ---- 15
5.6. Digital transmitter connection ------------------------- 16
5.7. AC power supply cord connection ------------------- 16
5.8. Active subwoofer wireless connection -------------- 16
5.4. Connection to a TV -------------------------------------- 15
5.5. Connection from an HDMI compatible device ---- 15
5.6. Digital transmitter connection ------------------------- 16
5.7. AC power supply cord connection ------------------- 16
5.8. Active subwoofer wireless connection -------------- 16
6 Self diagnostic and special mode setting -------------- 17
6.1. Automatically Displayed Error Codes --------------- 17
6.2. Service Mode---------------------------------------------- 18
6.3. Cold start --------------------------------------------------- 21
6.4. Pairing mode (with Active Woofer - SB-
6.2. Service Mode---------------------------------------------- 18
6.3. Cold start --------------------------------------------------- 21
6.4. Pairing mode (with Active Woofer - SB-
HWA520) --------------------------------------------------- 22
6.5. SET AUDIO DELAY ------------------------------------- 22
7 Troubleshooting Guide---------------------------------------- 23
8 Service Fixture & Tools --------------------------------------- 25
9 Disassembly and Assembly Instructions--------------- 26
8 Service Fixture & Tools --------------------------------------- 25
9 Disassembly and Assembly Instructions--------------- 26
9.1. Disassembly flow chart --------------------------------- 28
9.2. Main Parts Location Diagram ------------------------- 30
9.3. Main Unit (SU-HTB520) ------------------------------- 31
9.4. Speaker Unit (SB-HWA520) --------------------------- 84
9.2. Main Parts Location Diagram ------------------------- 30
9.3. Main Unit (SU-HTB520) ------------------------------- 31
9.4. Speaker Unit (SB-HWA520) --------------------------- 84
10 Service Position ------------------------------------------------- 90
10.1. Main Unit (SU-HTB520) -------------------------------- 90
10.2. Speaker Unit (SB-HWA520) --------------------------- 98
10.2. Speaker Unit (SB-HWA520) --------------------------- 98
11 Voltage Measurement & Waveform Chart--------------- 99
11.1. Main Unit (SU-HTB520) ------------------------------- 99
11.2. Speaker Unit (SB-HWA520) ------------------------ 105
11.3. Waveform Chart ---------------------------------------- 106
11.2. Speaker Unit (SB-HWA520) ------------------------ 105
11.3. Waveform Chart ---------------------------------------- 106
12 Illustration of IC’s, Transistors and Diodes ---------- 110
12.1. Main Unit (SU-HTB520) -------------------------------110
12.2. Speaker Unit (SB-HWA520) --------------------------110
12.2. Speaker Unit (SB-HWA520) --------------------------110
13 Overall Simplified Block -------------------------------------111
14 Block Diagram ------------------------------------------------- 113
14 Block Diagram ------------------------------------------------- 113
14.1. SYSTEM CONTROL BLOCK DIAGRAM ---------113
14.2. HDMI BLOCK DIAGRAM -----------------------------114
14.3. IC TERMINAL CHART---------------------------------115
14.4. AUDIO BLOCK DIAGRAM ---------------------------116
14.5. POWER SUPPLY (1/2) BLOCK DIAGRAM ------117
14.6. AUDIO & POWER SUPPLY (2/2) BLOCK
14.2. HDMI BLOCK DIAGRAM -----------------------------114
14.3. IC TERMINAL CHART---------------------------------115
14.4. AUDIO BLOCK DIAGRAM ---------------------------116
14.5. POWER SUPPLY (1/2) BLOCK DIAGRAM ------117
14.6. AUDIO & POWER SUPPLY (2/2) BLOCK
DIAGRAM -------------------------------------------------118
15 Wiring Connection Diagram ------------------------------- 119
15.1. Main Unit (SU-HTB520) -------------------------------119
15.2. Speaker Unit (SB-HWA520) ------------------------- 120
15.2. Speaker Unit (SB-HWA520) ------------------------- 120
16 Schematic Diagram------------------------------------------- 121
16.1. Main Unit (SU-HTB520) ------------------------------ 123
16.2. Speaker Unit (SB-HWA520) ------------------------- 137
16.2. Speaker Unit (SB-HWA520) ------------------------- 137
17 Printed Circuit Board ---------------------------------------- 140
17.1. Main Unit (SU-HTB520) ----------------------------- 140
17.2. Speaker Unit (SB-HWA520) ------------------------ 143
17.2. Speaker Unit (SB-HWA520) ------------------------ 143
18 Terminal Function of IC’s----------------------------------- 145
18.1. IC2201 (RFKWMHTB520M) IC MICRO
PROCESSOR------------------------------------------- 145
18.2. IC2301 (RFKWHTB520EH) IC MICRO
PROCESSOR------------------------------------------- 146
19 Exploded View and Replacement Parts List --------- 147
19.1. Exploded View and Mechanical replacement
Parts List ------------------------------------------------- 147
19.2. Electrical Replacement Parts List ------------------ 153
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, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, check for leakage current checks to prevent 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. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
2. Using an ohmmeter measure the resistance value, 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
chassis, the reading should be between 1M
Ω and 5.2Ω. When the exposed metal does not have a return path to the chassis,
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
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)
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. should the measurement is outside of
the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is
returned to the customer.
the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is
returned to the customer.
4
1.2.
Before Repair and Adjustment
Main Unit (SU-HTB520)
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.
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 220-240V, at 50 Hz in NO SIGNAL mode, at volume minimum, SEL: HDMI/D-IN should be ~180 mA.
Speaker Unit (SB-HWA520)
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.
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 220-240V, at 50 Hz in NO SIGNAL mode, at volume minimum, SEL: HDMI/D-IN should be ~220 mA.
1.3.
Caution For SMPS Module & Fuse Replacement
Caution:
This models uses SMPS Module to supply the voltage & power required for the circuitries (SU-HTB520 & SB-HWA520). It is
replaced as an assembly, do not attempt to replace or repair by individual components.
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.
• 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.