AOC P/N : 41A50-144 service manual C1,C2,C4 --- 1uF/50V

Page 82

13.AUDIO SCHEMATIC DIAGRAM

U1

AN7522

VCC

OUT1+

GND

OUT1-

Stand-by

Vin1

GND

Vin2

Volume

OUT2+

GND

OUT2-

C1,C2,C4 --- 1uF/50V

1

2

3

4

5

6

7

8

9

10

11

12

GND

+

GND

+

GND

J1

+

1

C3

C1

C2

2

2200uF/25V

1uF

1uF

CON2

R1

R2

+

C4

GND

10K

10K

R3

+

R4

1uF

R5

R6

5

J2

33K

68K

GND

GND

GND

4

15K

15K

3

C5

2

10uF/50V

C6

C7

1

GND

R7

+

0.047uF

0.047uF

R8

R9

C8

EAR PHONE

130K

VR1

100uF/16V

3K

3K

J3

10K

GND

2

GND

GND

GND

1

J4

CON2

1

2

3

AUDIO IN

GND

R10

R11

S1

SW SPST

J5

1

2

1(3W)

1(3W)

+

C9

R12

DC IN

100uF/25V

680

D1

GND

LED

GND

GND

Title

LM700A Audio 1.5W X2

Size

Document Number

Rev

A

<Doc>

<RevCode>

Date:

Friday, April 27, 2001

Sheet

1

of

1

5

Image 82

Contents

Spectrum Series SEP Table of Contents General specifications Specifications for LCD MonitorLCD-PANEL LCD Monitor Description Monitor Block DiagramInterface Connectors AC-IN AdapterOperating Precautions Precautions and NoticesAssembly Precaution Storage PrecautionsOperating Instructions PIN no Description REDAdjustment Conditions and Precautions AdjustmentAdjustment Method Adjust 6500 color-temperature Front Panel Control Knobs Input not Support CIRCUIT-DESCRIPTIONOSD-INDEX Explanation CHI-MEI Panel M170E1SIMPLE-INTRODUCTION about LM700 chipset MODULE-TPYE ComponentPanel SET factory mode flag Power-On Subrotine ChartSoftware Flow Chart Clear factory mode flagII. Main Subrotine Loop Interface-Board Trouble-Shooting chart No Screen AppearU200-DATA Output PANEL-POWER CircuitMainboard Check Oscillator Block as above Keyboard Block check POWER-BLOCK check END There is an interferences in DOS Mode Panel Luminance WAS DownInverter -MODULE Spec &Trouble Shooting Chart CorporationFunction Load Circuit M P O C O R P O R a T I O N Trouble Shooting of CHI-MEI Inverter DIVTL0037-D42 Part List Part Part Number QTY Description Supplier Remark Name Trouble Shooting Hight Voltage Protection Enbale Abnormality Transformer Abnormality Part number 80AL17-1-CH Black, 80AL17-2-CH White Check U101 PIN4NO Freq ~70KHZPage IV. Adapter BOM List Part no AL15-2-LI Reference Part Quantity Cat.NOPCB PCB for CH-1205 Revd PCS For Front Heatsink AUDIO-MODULE Trouble shooting chart No Voice OutputAudio BOM II. Sound DistortionGMZAN1 PIN # Pin DescriptionAnalog-to-Digital Converter Name DescriptionHost Interface HIF / External On-Screen Display Clock Recovery / Time Base Conversion Name Description 2pxl/clk 1pxl/clk TFT Panel InterfacePIN # TFTTest Pins System-level Block Diagram Typical Stand-alone ConfigurationSlow Dclk Operating ModesNative ZoomDestination Stand Alone DownscalingSource Stand Alone Functional Description Clock Recovery CircuitOverall Architecture Clock Recovery Circuit Source Timing Generator Clock Recovery CharacteristicsSampling Phase Adjustment Minimum Typical MaximumPin Connection for RGB Input with Hsync/Vsync ADC CharacteristicsAnalog-to-Digital Converter 2.3.1 Pin Connection Pin Connection for RGB Input with Composite SyncInput Timing Measurement Sync. Signal SupportDisplay Mode Support Source Timing MeasurementData Path IRQ ControllerIRQ-Generation Conditions IRQ Event Remark Gamma Table TFT Panel Interface Timing SpecificationScaling Filter RGB OffsetPclk *1 PCLKB*4Horizontal size in TFT Vsync width and display position in TFTHsync width in TFT Power Manager One pixel per clock mode in TFTState 2 Panel Drive Enabled State 0 Power OffState 1 Power On State 3 Panel Fully ActivePanel Interface Pad Drive Strength Panel Interface Drive StrengthHost Interface Value 4 bits Drive Strength in mATiming Diagram of the gmZAN1 Serial Communication Serial Communication ProtocolMulti-Function Bus MFB GmZAN1 Serial Channel Specification Parameter Min Typ MaxOn-Screen Display Control OSD Color Map On-Chip OSD ControllerTclk Specification Tclk InputAbsolute Ratings Parameter Min Typ Max Electrical CharacteristicsDC Electrical Characteristic Parameter Min Typ Max PvddMechanical of Cabinet Front DIS-ASSEMBLY Parts List of Cabinet T780KMGHBAA0A SpecificationParts List of Cabinet continue Parts List of Conversion Board Location CBPC780GM SpecificationLocation AI780GM Specification Location AI780GM SMD EC 22UF 16V 85C Csize Parts List of KEY PC Board KEPC780EKParts List of DC-POWER Board Parts List of Audio BoardAdapter Module Power System and Consumption CurrentInverter Module PCB Layout Schematic Diagram TOP-LEVEL FlowII. GMZAN1 Block Lvds Block MCU Block Power Block Adapter Schematic CH-1205 KBL405GC1,C2,C4 --- 1uF/50V