Table of Contents
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Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful radiation
and materials, various measures are provided in this Hitachi liquid crystal television/monitor.
Be sure to read the cautionary items described in the manual to maintain safety before servicing.
1. The LCD Panel Module is made of glass. When handling broken LCD Panel Module, take special care not to
be injured.
2. Replacement work should only start after the LCD Panel Module and the AC/DC Power Supply has become
sufficiently cool.
3. Take special care of the LCD display panel and do not damage its surface.
4. Do not touch the LCD Panel Module with your bare hands and protect its surface from stains.
5. It is recommended to use clean soft gloves during servicing in order to protect the LCD display panel and the
service personnel himself.
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SAFETY NOTICE...................................................2
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DISPLAY MODES..................................................2
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SPECIFICATIONS...................................................3
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LOCATION OF CONTROLS......................................4
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CONNECTIONS......................................................7
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FACTORY SETTTINGS...........................................10
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TROUBLESHOOTING..............................................11
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SCHEMATIC DIAGRAMS.............................................12
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
July 2005
(15" model)
Service Warning
Liquid Crystal Display Television/Monitor
Digital Media Systems Group, Hitachi Asia Ltd.
(20" model)
Caution
Contents
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PRINTED CIRCUIT BOARD........................................21
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BLOCK DIAGRAM...............................................27
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WIRING DIAGRAM.............................................28
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EXPLODED VIEW & MECHANICAL PARTS LIST..........29
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INFORMATION OF ICS...............................................31
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Summary of Contents for Hitachi C15-LC880SNT
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Page 1: Table Of Contents
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful radiation and materials, various measures are provided in this Hitachi liquid crystal television/monitor. Be sure to read the cautionary items described in the manual to maintain safety before servicing. -
Page 2: Safety Notice
SAFETY NOTICE Maintenance and repair of this LCD TV/monitor should be done by qualified service personnel only. Critical parts that have special safety characteristics are identified by a in the replacement parts list. Use of any substitute replacement part that does not have the same safety characteristics as the recommended replacement part in the parts list might create shock, fire and / or other hazards. -
Page 3: Specifications
SPECIFICATIONS Model C15-LC880SNT C20-LC880SNT Panel Size 15.1” 20.1” Display Size 304.1(H) X 228.1(V)mm 408(H) X 306(V)mm Pixel Pitch 0.297(H) X 0.297(V)mm 0.51(H) X 0.51(V)mm Viewing Angle (H/V) <140 / 125 <160 / 140 Screen Tilt Angle Front 5 / Rear 15... -
Page 4: Location Of Controls
LOCATION OF CONTROL (Continued) LOCATION OF CONTROL Remote Control 1. RECALL button To display setup information of channel 2. MUTE button To switch on/off sound mute 3. TV/VIDEO button To select TV, AV1, AV2, S-Video, COMP, VGA or DVI mode 4. - Page 5 LOCATION OF CONTROL 7. SOUND button To select the sound effect mode (Custom/News/Cinema/MusicHall) 8. TIME button To display the preset time 9. NUMBER buttons To directly select program number 10. DIGIT button To select one, two or three-digit program number input options 11.
- Page 6 LOCATION OF CONTROL Front and Side Panels For 15” model For 20” model 1. TV/VIDEO button 5. STANDBY button To select TV, AV1, AV2, S-Video, To switch on when at standby mode or vice COMP, VGA or DVI mode versa 2.
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Page 7: Connections
CONNECTIONS Connecting The Antenna Antenna Note: Aerial connections: Standard-phono socket 75 or F connector. . Input impedance: 75 unbalanced. For Australia only -Install an external aerial conforming to AS 1417.1 for safety purpose. - 7 -... - Page 8 CONNECTIONS Connecting The PC STEPS: 1. Switch off all power supplies to the equipment and TV set before connection 2. Connect the signal and audio cables from the computer output terminal to the TV 3. Connect power cord 4. Switch on the TV first, then switch on the computer 5.
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Page 9: Connecting Av Equipment
CONNECTIONS Connecting AV Equipment This TV set provides AV1, AV2 input terminals, S-Video and a group of Y/Pb/Pr terminal for connection ’ to VCR, VCD, DVD or other video equipment. Please refer to the instruction manual of the other equipment for more information on the connection to the TV. -
Page 10: Factory Setttings
1. Press MENU button, then press 3210 using the number button on the remote control to enter into the factory setting. 2. The factory setting menu will be displayed on the screen. The following table is shown when in AV mode: Item Factory setting C15-LC880SNT C20-LC880SNT Basic Setting Backlight NVRAM Addr NVRAM Val... -
Page 11: Troubleshooting
TROUBLESHOOTING TV DOES NOT TURN ON Is the power cord and Plug in DC adapter plugged in? Normal LED lights up Check LED Defective Replace LED Press Power button with a new one LED light is green LED light is red Check inverter PWB unit Check MCU(U4) Normal... -
Page 12: Schematic Diagrams
SCHEMATIC DIAGRAMS Main Diagram-1 - 12 -... - Page 13 SCHEMATIC DIAGRAMS Main Diagram-2 - 13 -...
- Page 14 SCHEMATIC DIAGRAMS Control Keys Diagram - 14 -...
- Page 15 SCHEMATIC DIAGRAMS Power Diagram - 15 -...
- Page 16 SCHEMATIC DIAGRAMS Tuner Diagram - 16 -...
- Page 17 SCHEMATIC DIAGRAMS Teletext Diagram - 17 -...
- Page 18 SCHEMATIC DIAGRAMS Video Decoder Diagram - 18 -...
- Page 19 SCHEMATIC DIAGRAMS Audio And CONN Diagram - 19 -...
- Page 20 SCHEMATIC DIAGRAMS Lvds_ttl-out Diagram - 20 -...
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Page 21: Printed Circuit Board
PRINTED CIRCUIT BOARD Tuner Board (Top Side) - 25 -... -
Page 22: Block Diagram
BLOCK DIAGRAM - 27 -... -
Page 23: Wiring Diagram
WIRING DIAGRAM - 28 -... -
Page 24: Information Of Ics
INFORMATION OF ICS IC MC78M05 D-PAK Pin No. Pin Name Description Pin No. Pin Name Description Input Output Voltage Output Output Voltage IC LM1117DTX-3.3 TO-252 Pin No. Pin Name Description Pin No. Pin Name Description Input Output Voltage Adi/GND Output Voltage Output IC LM1084ISX-3.3 TO263 Pin No. - Page 25 INFORMATION OF ICS IC FSAV330 QS0P16 Pin No. Pin Name Description Pin No. Pin Name Description IC 74LCX14 S0IC14 Pin No. Pin Name Description Pin No. Pin Name Description Inputs Outputs Outputs Inputs Inputs Outputs Outputs Inputs Inputs Outputs Outputs Inputs Inputs IC SST39SF020A PLCC32...
- Page 26 INFORMATION OF ICS IC GM5221 PQFP-208 (DVI Input Port) Pin No. Pin Name Description VDD_RX0_1.8 VDD (1.8V) for TMDS input pair 2. Must be bypassed with external capacitor to GND_RX0 AGND_RX0 Analog GND for TMDS input pair 0. Must be connected directly to the analog ground plane.
- Page 27 INFORMATION OF ICS IC GM5221 PQFP-208 (Analog Input Port) Pin No. Pin Name Description AVDD_BLUE_3.3 Analog power (3.3V) for the blue channel. Must be bypassed with capacitor to AGND_BLUE pin on system board. BLUE+ Positive analog input for Blue channel. BLUE- Negative analog input for Blue channel.
- Page 28 INFORMATION OF ICS IC GM5221 PQFP-208 (System Interface) Pin No. Pin Name Description GPIO0 General-purpose input/output signals GPIO1 [Bi-directional, Schmitt trigger, 5V-tolerant] GPIO2 GPIO3 GPIO4 GPIO5 GPIO6 GPIO7/IRQin General-purpose input/output signals [Bi-directional, Schmitt trigger, 5V- GPIO8/IRQout tolerant] or OCM interrupt and chip status. GPIO9/SCL General-purpose input/output signals [Bi-directional, Schmitt trigger, 5V- GPIO10/SDA...
- Page 29 INFORMATION OF ICS IC GM5221 PQFP-208 (LVDS Display Interface) Pin No. Pin Name Description AVDD_LV_E_3.3 Digital Power for LVDS outputs. Connect to digital 3.3V supply. AVSS_LV_E Ground for LVDS outputs. CH3P_LV_E CH3N_LV_E CLKP_LV_E CLKN_LV_E CH2P_LV_E CH2N_LV_E CH1P_LV_E CH1N_LV_E CH0P_LV_E CH0N_LV_E AVSS_LV_E Ground for LVDS outputs.
- Page 30 INFORMATION OF ICS IC GM5221 PQFP-208 (TTL Display Interface) Pin No. Pin Name Description AVDD_LV_E_3.3 Analog Power for TTL outputs. Connect to analog 3.3V supply AVSS_LV_E Ground Red channel bit 0 Not used. Red channel bit 1 Not used. Red channel bit 2 Red channel bit 0 Red channel bit 3 Red channel bit 1...
- Page 31 INFORMATION OF ICS IC GM5221 PQFP-208 (Miscellaneous) Pin No. Pin Name Description ROM-DATA3 External ROM DATA3 ROM-DATA2 External ROM DATA2 ROM-DATA1 External ROM DATA1 ROM-DATA0 External ROM DATA0 ROM-OEn External ROM Output Enable ROM-WEn External ROM Write Enable ROM-CSN External ROM Crip Select Enable 8,42,51, Ground for cord power 74,76,87,...
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Page 32: Contrast
INFORMATION OF ICS IC SAA5264PS/M3/0104 SDIP52 Pin No. Pin Name Description Output for 14-bit high precision Pulse Width Modulator(PWM) PWM0 Output for 6-bit PWMs 0 to 6 PWM1 PWM2 PWM3 PWM4 PWM5 PWM6 ADC0 Inputs for the software Analog-to-Digital-Converter(ADC) facility ADC1 ADC2 ADC3... - Page 33 INFORMATION OF ICS IC SAA5264PS/M3/0104 SDIP52 Pin No. Pin Name Description VSYNC Vertical sync pulse input; Schmitt triggered for a TTL version; the polarity of this pulse is programmable by register bit TXT1. V POLARITY Periphery ground Core supply voltage (+3.3V) OSCGND Crystal oscillator ground XTALIN...
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Page 34: Blue
INFORMATION OF ICS IC TVP5146PFP S-PQFP-G80 (Analog Video) Pin No. Pin Name Description VI_1_A VI_1_B VI_1_x: Analog video input for CVBS/Pb/B/C VI_1_C VI_2_x: Analog video input for CVBS/Y/G VI_2_A VI_3_x: Analog video input for CVBS/Pr/R/C VI_2_B VI_4_x: Analog video input for CVBS/Y VI_2_C Up to 10 composite, 4 S-video, and 2 composite or 3 component VI_3_A... - Page 35 INFORMATION OF ICS IC TVP5146PFP S-PQFP-G80 ( Power Supply Pin No. Pin Name Description AGND Analog ground. Connect to analog ground. A18GND_REF Analog 1.8-V return A18VDD_REF Analog power for reference 1.8V CH1_A18GND CH2_A18GND Analog 1.8-V return CH3_A18GND CH4_A18GND CH1_A18GND CH2_A18GND Analog power.
- Page 36 REPLACEMENT PARTS LIST The following service parts list are available for purchase. Serviceman may quote the components shown in this page for servicing purposes. PRODUCT SAFETY NOTE : Critical parts that have special safety characteristics are identified by a the replacement parts list or the schematic diagrams. Use of any substitute replacement part that does not have the same safety characteristics as the recommended replacement part in the parts list might create shock, fire and/or other hazards.
- Page 37 PARTS LIST (FOR REFERENCE ONLY) The components shown in the remaining pages served as a reference only. It is not meant for ordering of components for servicing purposes. Do not quote any components from these lists. MAIN PCB ASSEMBLY Item Part No.
- Page 38 C15-LC880SNT & C20-LC880SNT SC No. 0013E Copyright Digital Media Systems Group, (2005) All rights reserved...