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❍ SECTION 1. GENERAL
• ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
• SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
• IDENTIFICATION OF CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
❍ SECTION 2. ELECTRICAL
• ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
• TROUBLESHOOTING GUDIE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
• WAVEFORMS OF MAJOR CHECK POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
• INTERNAL BLOCK DIAGRAM OF IC's . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
• VOLTAGE SHEET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-19
• BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-21
• SCHEMATIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
• PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-31
• WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-37
❍ SECTION 3. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
❍ SECTION 4. SPEAKER SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
❍ SECTION 5. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
[CONTENTS]
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Summary of Contents for LG LPX-M930A
- Page 1 [CONTENTS] ❍ SECTION 1. GENERAL • ESD PRECAUTIONS ............1-2 •...
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Page 2: Section 1. General
SECTION 1. GENERAL ❏ ESD PRECAUTIONS Electrostatically Sensitive Devices (ESD) Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD 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 static electricity. -
Page 3: Specifications
❏ SPECIFICATIONS - 1-3 -... -
Page 4: Identification Of Controls
❏ IDENTIFICATION OF CONTROLS Front Panel - 1-4 -... - Page 5 Rear Panel/Display Window Remote control - 1-5 -...
- Page 6 MEMO - 1-6 -...
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Page 7: Section 2. Electrical
SECTION 2. ELECTRICAL ❏ ADJUSTMENTS - 2-1 -... -
Page 8: Troubleshooting
❏ TROUBLESHOOTING - 2-2 -... - Page 9 - 2-3 -...
- Page 10 - 2-4 -...
- Page 11 - 2-5 -...
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Page 12: Waveforms Of Major Check Point
❏ WAVEFORMS OF MAJOR CHECK POINT - 2-6 -... - Page 13 - 2-7 -...
- Page 14 - 2-8 -...
- Page 15 - 2-9 -...
- Page 16 - 2-10 -...
- Page 17 - 2-11 -...
- Page 18 - 2-12 -...
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Page 19: Internal Block Diagram Of Ics
❏ INTERNAL BLOCK DIAGRAM OF ICs I IC301 LC877132A • Pin Assignment - 2-13 -... - Page 20 • System Block Diagram - 2-14 -...
- Page 21 • Pin Assignment - 2-15 -...
- Page 22 - 2-16 -...
- Page 23 I IC601 TD7440D • Pin Assignment R_IN3 R_IN4 R_IN2 LOUT R_IN1 ROUT L_IN1 AGND L_IN2 L_IN3 CREF L_IN4 MUXOUTL IN(L) DIG-GND MUXOUT(R) TREBLE(R) IN(R) TREBLE(L) BIN(R) N.C. BOUT(R) N.C. BIN(L) BOUT(L) D98AU884 • Block Diagram MUXOUTL TREBLE(L) BIN(L) BOUT(L) L-IN1 100K L-IN2 100K...
- Page 24 I IC700 LA4631 • Block Diagram - 2-18 -...
- Page 25 ❏ VOLTAGE SHEET • SYSTEM CONTROL PART • DECK PART. - 2-19 -...
- Page 26 • CD PART - 2-20 -...
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Page 27: Section 4. Speaker Section
SECTION 4. SPEAKER SECTION 855L/R NSP : Non SVC Parts RUN DATE : 27- MAY - 04 LOCA. NO. PART NO. DESCRIPTION SPECIFICATION REMARKS A800 3111RCC164A CASE ASSEMBLY LPX-930 SPK ASSY L LEFT A801 3111RCC166B CASE ASSEMBLY LPX-930 SPK ASSY R RIGHT 3508RCC003B DECORATION... - Page 28 MEMO - 4-2 -...
- Page 29 ❏ BLOCK DIAGRAM 2-21 2-22...
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Page 30: Schematic Diagrams
❏ SCHEMATIC DIAGRAMS 1. MAIN SCHEMATIC DIAGRAM 2-23 2-24... - Page 31 2. FRONT/MICOM SCHEMATIC DIAGRAM 2-25 2-26...
- Page 32 3. TUNER SCHEMATIC DIAGRAM 2-27 2-28...
- Page 33 4. CDP SCHEMATIC DIAGRAM 2-29 2-30...
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Page 34: Printed Circuit Diagram
❏ PRINTED CIRCUIT DIAGRAM 1. MAIN P.C. DIAGRAM (COMPONENT SIDE) 2-31 2-32... - Page 35 1. MAIN P.C. DIAGRAM (SOLDER SIDE) 2-33 2-34...
- Page 36 2. CD P.C. DIAGRAM 2-35 2-36...
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Page 37: Wiring Diagram
❏ WIRING DIAGRAM 2-37 2-38... -
Page 38: Section 3. Exploded Views
SECTION 3. EXPLODED VIEWS ❏ CABINET, MAIN FRAME AND AUDIO DECK SECTION NOTE) Refer to “SECTION 5 REPLACEMENT PARTS LIST” in order to look for the part number of each part.