SA-XH175EE, SA-XH175GS, SC-XH175EE - Panasonic Audio Service Manual (repair manual)

sa-xh175ee, sa-xh175gs, sc-xh175ee service manual
Model
SA-XH175EE SA-XH175GS SC-XH175EE
Pages
127
Size
8.27 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / DVD HOME THEATER SOUND SYSTEM
File
sa-xh175ee-sa-xh175gs-sc-xh175ee.pdf
Date

Read Panasonic SA-XH175EE / SA-XH175GS / SC-XH175EE Service Manual online

PSG1202022CE
DVD Home Theater Sound System
Model No.
SA-XH175EE
SA-XH175GS
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. Protection Circuitry ---------------------------------------- 4
1.4. Caution For AC Cord (For GS only) ------------------ 5
1.5. Caution For Fuse Replacement------------------------ 6
1.6. Safety Part Information----------------------------------- 6
2 Warning -------------------------------------------------------------- 7
2.1. Prevention of Electrostatic Discharge (ESD)
to Electrostatic Sensitive (ES) Devices--------------- 7
2.2. Precaution of Laser Diode ------------------------------- 8
2.3. Service caution based on Legal restrictions -------- 9
2.4. Handling Precautions for Traverse Assembly ---- 10
3 Service Navigation --------------------------------------------- 12
3.1. Service Information -------------------------------------- 12
4 Specifications ---------------------------------------------------- 13
4.1. Others (Licences) ---------------------------------------- 14
Note: Please refer to the original service manual for:
O
 
DVD Mechanism Unit (BRS11D), Order No. PSG1201015AE
O
 Speaker system SB-XH175EP-K, Order No. PSG1202026CE
2
5 General/Introduction ------------------------------------------- 15
5.1. Power-Saving Features -------------------------------- 15
5.2. Linked Operations with the TV (VIERA Link™
“HDAVI Control™”) -------------------------------------- 16
5.3. Disc Information ------------------------------------------ 18
5.4. DivX Information (For EE) ----------------------------- 21
6 Location of Controls and Components------------------ 22
6.1. Remote Control Key Button Operations ------------ 22
6.2. Main Unit Key Button Operations -------------------- 23
7 Installation Instructions--------------------------------------- 24
7.1. Speaker Connections  ---------------------------------- 24
7.2. Radio Antenna connection----------------------------- 24
7.3. Connection with an ARC compatible TV ----------- 25
8 Operating Instructions ---------------------------------------- 26
8.1. Removing of disc during abnormality --------------- 26
9 Service Mode ----------------------------------------------------- 28
9.1. Cold-Start--------------------------------------------------- 28
9.2. Panel Code Setting Operation ------------------------ 28
9.3. Self Diagnostic -------------------------------------------- 31
9.4. Error Code ------------------------------------------------- 36
9.5. Sales Demonstration Lock Function ---------------- 38
9.6. Firmware Version-Up Information -------------------- 39
10 Troubleshooting Guide---------------------------------------- 41
10.1. Troubleshooting Guide for F61 and/or F76 -------- 41
10.2. DVD/CD Laser Diode current measurement ------ 44
10.3. Basic Troubleshooting Guide for Traverse
Unit (Main P.C.B.) ---------------------------------------- 45
10.4. Basic Troubleshooting Guide for HDMI AV
output-------------------------------------------------------- 46
11 Service Fixture & Tools --------------------------------------- 47
12 Disassembly and Assembly Instructions --------------- 48
12.1. Screw Type ------------------------------------------------ 48
12.2. Disassembly Flow Chart-------------------------------- 49
12.3. Main Components and P.C.B. Locations ----------- 50
12.4. Disassembly of Top Cabinet--------------------------- 51
12.5. Replacement of Tray Ornament ---------------------- 52
12.6. Disassembly of Front Panel Block Assembly ----- 54
12.7. Disassembly of Operation Button P.C.B. ----------- 55
12.8. Disassembly of Power Button P.C.B.---------------- 56
12.9. Disassembly of Mic P.C.B. ----------------------------- 57
12.10. Disassembly of Panel P.C.B. -------------------------- 58
12.11. Disassembly of Rear Panel---------------------------- 58
12.12. Disassembly of Fan Unit ------------------------------- 59
12.13. Disassembly of Main P.C.B. --------------------------- 60
12.14. Disassembly of D-Amp P.C.B. ------------------------ 61
12.15. Replacement of Digital Amplifier IC (IC5100/
IC5200/IC5300)------------------------------------------- 62
12.16. Disassembly of AC Inlet P.C.B. ----------------------- 64
12.17. Disassembly of SMPS P.C.B. ------------------------- 65
12.18. Replacement of Switching Regulator IC
(IC5701) ---------------------------------------------------- 66
12.19. Replacement of Diode (D5702) ---------------------- 68
12.20. Replacement of Diode (D5802) ---------------------- 70
12.21. Replacement of Diode (D5803) ---------------------- 71
12.22. Disassembly of DVD Mechanism Unit
(BRS11D) -------------------------------------------------- 72
12.23. Replacement of Traverse unit------------------------- 73
13 Service Position ------------------------------------------------- 79
13.1. Checking & Repairing of Panel P.C.B. -------------- 79
13.2. Checking & Repairing Main P.C.B. ------------------ 79
13.3. Checking and Repairing D-Amp P.C.B.------------- 80
13.4. Checking & Repairing of SMPS P.C.B.------------- 82
14 Overall Simplified Block Diagram------------------------- 83
15 Block Diagram --------------------------------------------------- 84
15.1. Backend---------------------------------------------------- 84
15.2. IC Terminal Chart ---------------------------------------- 85
15.3. System Control ------------------------------------------- 86
15.4. Audio and Video ----------------------------------------- 87
15.5. Power Supply --------------------------------------------- 88
16 Wiring Connection Diagram -------------------------------- 90
17 Schematic Diagram -------------------------------------------- 91
17.1. Schematic Diagram Notes ---------------------------- 91
17.2. Main(HDMI/Micon) Circuit ----------------------------- 93
17.3. Panel Circuit --------------------------------------------- 104
17.4. Operation Button, Power Button and AC Inlet
Circuit ------------------------------------------------------ 105
17.5. D-Amp Circuit-------------------------------------------- 106
17.6. SMPS Circuit--------------------------------------------- 110
17.7. Mic Circuit ------------------------------------------------ 112
18 Printed Circuit Board----------------------------------------- 113
18.1. Main P.C.B.----------------------------------------------- 113
18.2. Panel, Operation Button, Power Button and
Mic P.C.B.------------------------------------------------- 115
18.3. D-Amp P.C.B. -------------------------------------------- 116
18.4. SMPS and AC Inlet P.C.B. --------------------------- 117
19 Appendix Information of Schematic Diagram ------- 119
19.1. Voltage & Waveform Chart --------------------------- 119
19.2. Illustration of ICs, Transistor and Diode----------- 127
19.3. Terminal Function of ICs ------------------------------ 128
20 Exploded View and Replacement Parts List---------- 131
20.1. Exploded View and Mechanical Replacement
Parts List -------------------------------------------------- 131
20.2. Electrical Replacement Parts List ------------------ 135
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
 and 5.2M
.
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
, 10 watts resistor, in parallel with a 0.15
µ
F 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 to discharge unit AC Capacitors as such (C5700, C5701, C5702, C5704, C5705, C5706) through a 10 
, 10
W resistor 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 230V, 50 Hz in NO SIGNAL mode at volume minimal should be ~ 500 mA (EE).
Current consumption at AC 240V, 50 Hz in NO SIGNAL mode at volume minimal should be ~ 500 mA (GS).
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.
Page of 127

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Here you can read online and download Panasonic SA-XH175EE / SA-XH175GS / SC-XH175EE Service Manual in PDF. SA-XH175EE / SA-XH175GS / SC-XH175EE service manual will guide through the process and help you recover, restore, fix, disassemble and repair Panasonic SA-XH175EE / SA-XH175GS / SC-XH175EE 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.