Hitachi C20-LC880SNT, C15-LC880SNT User Manual

(15” model)

(20” model)

Caution

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.

Service Warning

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.

Contents

* SAFETY NOTICE...................................................2

* DISPLAY MODES..................................................2

* SPECIFICATIONS...................................................3

* LOCATION OF CONTROLS......................................4

* CONNECTIONS......................................................7

* FACTORY SETTTINGS...........................................10

* TROUBLESHOOTING..............................................11

* SCHEMATIC DIAGRAMS.............................................12

* PRINTED CIRCUIT BOARD........................................21

* BLOCK DIAGRAM...............................................27

* WIRING DIAGRAM.............................................28

* EXPLODED VIEW & MECHANICAL PARTS LIST..........29

* INFORMATION OF ICS...............................................31

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

Liquid Crystal Display Television/Monitor

July 2005 Digital Media Systems Group, Hitachi Asia Ltd.

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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.

Read and comply with all caution and safety related notes on or inside the LCD/monitor cabinet, the
printed circuit boards or the LCD Panel Module. Please note the following safety symbols indicated
below.

CAUTION

RISK OF ELECTRIC

SHOCK DO NOT

OPEN

This symbol indicates “dangerous
voltage” inside the product that
presents a risk of electric shock or
personal injury.

DISPLAY MODES

Resolution

640 x 480
800 x 600

1024 x 768

Horizontal

Frequency (KHz)

31.47 (N)

37.88 (P)

48.36 (N)

TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.

15” Incoming display mode (input)

Vertical

Pixel Frequency

Frequency (Hz)

60.00 (N)

60.32 (P)

60.00 (N)

This symbol indicates
important instructions
accompanying the
product.

(MHz)

25.18

40.00

65.00

Comment

DOS
VESA
VESA

Resolution

640 x 480
800 x 600

Frequency (KHz)

31.47 (N)

37.88 (P)

* Modes, which are not listed in the above table, may not be supported. For an optimal picture it is

recommended to choose a mode listed in the table.

* For 15”model, there are 3 types of incoming display modes compatible with Windows as shown

in the tables above.

* For 20”model, there are 2 types of incoming display modes compatible with Windows as shown

in the table above.

* Sometimes, the image may be disrupted due to the frequency standard from the VGA card.

However, this is not an error. You may improve this situation by activating the automatic adjustment
or by manually changing the phase and the clock settings in the menu.

* If you switch off the TV/monitor, interference lines may occur on your screen. Please note that

this is normal.

* To extend the service life of the product, we recommend that you use your computer’s power

management function.

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Horizontal

20” Incoming display mode (input)

Vertical

Pixel Frequency

Frequency (Hz)

60.00 (N)

60.32 (P)

- 2 -

(MHz)

25.18

40.00

Comment

DOS
VESA

SPECIFICATIONS

Model C15-LC880SNT C20-LC880SNT

Panel

Size
Display Size
Pixel Pitch
Viewing Angle (H/V)
Screen Tilt Angle

Frequency

Horizontal
Vertical
Contrast Ratio
Brightness
Display Color

Display Resolution Optimum Mode

Maximum Mode

Input Signal Sync.

Video Signal
RGB Signal

TV / Video Color System

Sound System
Video Format

Power Supply Input

Output (Adapter)

Power Consumption

Typical
Power Saving

15.1”

304.1(H) X 228.1(V)mm

0.297(H) X 0.297(V)mm
<140 / 125

408(H) X 306(V)mm

0.51(H) X 0.51(V)mm
<160 / 140

Front 5 / Rear 15

30 ~ 70KHz

50 ~ 75Hz

400:1

400 cd/m

16.2Million

1024 X 768 @ 70Hz
1024 X 768 @ 75Hz

2

500 cd/m

16.7Million

800 X 600 @ 70Hz
800 X 600 @ 75Hz

H/V Separate, TTL, P. or N.

H/V Composite, TTL, P. or N.

Sync-on-green 0.3 Vp-p, N.

1 Vp-p @ 75 ohm

0.7Vp-p @ 75 ohm

PAL / SECAM / NTSC

DK / I / BG / M

CVBS, S-VIDEO, Y/Pb/Pr

AC 100 - 240Vrms (50Hz / 60Hz)

DC 12V / 4.5A DC 12V / 5.2A

<54W

<3W

20.1”

2

<65W

<3W

Dimensions (WxHxD)
Weight

Environmental Considerations

Operating Temperature

390 X 401 X 188mm

5.3Kg

50 to 104 (10 to 40 )
Operatiing Humidity
Storage Temperature

13 to 113 (-25 to 45 )

Storage Humidity

Audio Characteristics

Audio Input
Frequency
Response

RCA Jack Red(R) White(L), 0.5 0.3Vrms

RF: 100Hz ~ 12KHz (at 3dB)

AV : 100Hz ~ 13KHz (at 3dB)

Note:

* Design and specifications are subject to change without notice.
* Weight and dimensions shown are approximate values only.

552 X 460 X 188mm

8.4Kg

10% to 80%

5% to 95%

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LOCATION OF CONTROL (Continued)

LOCATION OF CONTROL

Remote Control

1 2

10

13
15

16

17

3
5

7

4
6

8

9

11

12
14

16
15

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.STANDBY button

To switch on the LCD TV/monitor when at standby mode or vice versa

5.PICTURE button

To select picture effect mode (Standard/Soft/Custom/Bright)

6.SLEEP button

To on/off sleep mode and set the sleep timer

12

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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.LST-CH button

To return to previously selected program number

12.TELETEXT buttons (OPTIONAL)

These buttons are used for certain models with Teletext functions only. For further details, refer
to the “TELETEXT FUNCTION” section in this manual

13.CH I/II button

To switch between NICAM / A2 stereo and mono sound output

14.TV MENU button

To enter the TV menu directly to tune the programs

15.P-/+ ( ) buttons

To select previous / next program and to operate the menu

16. -/+ ( ) buttons

To decrease / increase volume and to adjust the menu

17.MENU button

To enter or exit from the MENU (TV/AV mode)
To accept your selection (PC mode)

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LOCATION OF CONTROL

Front and Side Panels

For 15” model

1
2
3

4

5

6

7

For 20” model

1.TV/VIDEO button

To select TV, AV1, AV2, S-Video,
COMP, VGA or DVI mode

2.MENU button

To enter or exit from the menu

3.PROGRAM buttons

To select previous/next program

4 .VOLUME buttons

To decrease/increase volume

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7

6

5.STANDBY button

To switch on when at standby mode or vice
versa

6.POWER INDICATOR

Lights up in red when the set is on standby;
Lights up in green when the set is power on

7.REMOTE CONTROL SENSOR

Infrared sensor for the remote control

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1

2

3

4

5

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.

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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.If the TV still does not function properly, please refer to the troubleshooting section to diagnose
the problem.

* Please do not open the cover of the TV

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Note:

Do not pull the cables. When connecting and disconnecting the cables, do it with your hand holding
the connector.

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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.

’

VIDEO EQUIPMENT

To Audio
input (AV2)

VIDEO EQUIPMENT VIDEO EQUIPMENT

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To Audio
input (AV2)

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Note:

* Please disconnect all the power supplies to the equipment and TV set before connection.
* Do not pull the cables. When connecting and disconnecting the cables, do it with your hand

holding the connector.

* Only 1 set of audio cable is to be connected to Audio input terminals of AV2.

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VIDEO EQUIPMENT

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FACTORY SETTINGS

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

1 Basic Setting Backlight 50

NVRAM Addr
NVRAM Val

2 Color Setting Auto Adjust

Red 0
Green 0
Blue 0
Red Offset 0
Green Offset 0
Blue Offset 0
Min Volume 0
Max Volume 68

3 Sound Setting Dot1 X Pos 31

Dot1 Y Pos 69
Dot2 X Pos 62
Dot2 Y Pos 81

4 4200K 5000K Warm Brightness 128

Contrast 128
Red 247
Green 237
Blue 237

5 STANDARD Brightness 128

Contrast 128
Red 255
Green 255
Blue 255

6 COOL Brightness 128

Contrast 126
Red 224
Green 228
Blue 251

7 CUSTOM Brightness 128

Contrast 128
Red 255
Green 255
Blue 255

8 Advanced Setting Factory Mode 1

Power Mode 1
Panel Index 34
Decder SatHue 0
Enable Zoom 1
Enable SCART P

Enable DVI Port 1
Factory Reset

9 Version Info V1.9-C15-LC880SNT V1.9-C20-LC880SNT

ADDC:V8-L15GC1-A1D01 ADDC:V8-L20GC1-A1D01
DDDC:V8-L15GC1-A1D02 DDDC:V8-L20GC1-A1D02

1 1

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TROUBLESHOOTING

TV DOES NOT TURN ON

Normal

1.Check MCU (U4)

2.Check CN3 (or
CN7) is connected

3.Check U8 has
VCC voltage

Is the power cord and
DC adapter plugged in?

Yes

LED lights up

Yes

Press Power button

LED light is green

Check inverter PWB unit Check MCU(U4)

Defective

1.Connect the line
of J9and inverter

2.Replace inverter
with a newone

LED light is red

Defective

Replace MCU with
a new one

No

No

Plug in

Check LED

Defective

Replace LED
with a new one

Normal

Replace DRIVE
PWB unit with
a new one

Normal

Defective

1.Replace MCU
with a newone.

2.Replace U8
with a newone.

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Check power input system

1.AC adapter
*Normal?
*Connected properly?

2.U9 has +5V?

3.U10 has 3.3V?

4.LED controls electrocircuit?

5.JD3 and JD2 are connected?

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SCHEMATIC DIAGRAMS

Main Diagram-1

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SCHEMATIC DIAGRAMS

Main Diagram-2

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SCHEMATIC DIAGRAMS

Control Keys Diagram

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SCHEMATIC DIAGRAMS

Power Diagram

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SCHEMATIC DIAGRAMS

Tuner Diagram

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SCHEMATIC DIAGRAMS

Teletext Diagram

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SCHEMATIC DIAGRAMS

Video Decoder Diagram

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SCHEMATIC DIAGRAMS

Audio And CONN Diagram

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SCHEMATIC DIAGRAMS

Lvds_ttl-out Diagram

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PRINTED CIRCUIT BOARD

Tuner Board (Top Side)

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BLOCK DIAGRAM

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WIRING DIAGRAM

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INFORMATION OF ICS

IC MC78M05 D-PAK

Pin No. Pin Name Description Pin No. Pin Name Description

1 Input Output Voltage 3 Output Output Voltage
2 GND

IC LM1117DTX-3.3 TO-252

Pin No. Pin Name Description Pin No. Pin Name Description

1 Input Output Voltage 3 Adi/GND Output Voltage
2 Output

IC LM1084ISX-3.3 TO263

Pin No. Pin Name Description Pin No. Pin Name Description

1 Input Output Voltage 3 Adi/GND Output Voltage
2 Output

IC LM2596S-5.0 TO-263

Pin No. Pin Name Description Pin No. Pin Name Description

1 VIN 4 Feed Back
2 Output 5 ON/OFF
3 Ground

IC SN74CBT3253CDBQR SSOP16

Pin No. Pin Name Description Pin No. Pin Name Description

1 1OE 9 2A
2 S1 10 2B1
3 1B4 11 2B2
4 1B3 12 2B3
5 1B2 13 2B4
6 1B1 14 S0
7 1A 15 2OE
8 GND 16 VCC

IC24LC16BT SOIC08

Pin No. Pin Name Description Pin No. Pin Name Description

1 A0 5 SDA
2 A1 6 SCL
3 A2 7 WP
4 VSS 8 VCC

IC FDS9933A SO-8

Pin No. Pin Name Description Pin No. Pin Name Description

1 S1 Source Voltage 5 D2 Drain-Source Voltage
2 G1 Gate-Source Voltage 6 D2 Drain-Source Voltage
3 S2 Source Voltage 7 D1 Drain-Source Voltage
4 G2 Gate-Source Voltage 8 D1 Drain-Source Voltage

IC 24AA02 SOIC08

Pin No. Pin Name Description Pin No. Pin Name Description

1 A0 5 SDA
2 A1 6 SCL
3 A2 7 WP
4 VSS 8 VCC

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INFORMATION OF ICS

IC FSAV330 QS0P16

Pin No. Pin Name Description Pin No. Pin Name Description

1 S 9 3A
2 1B 1 10 3B2
3 1B2 11 3B1
4 1A 12 4A
5 2B 1 13 4B2
6 2B2 14 4B1
7 2A 15 OE
8 GND 16 VCC

IC 74LCX14 S0IC14

Pin No. Pin Name Description Pin No. Pin Name Description

1 I0 Inputs 8 O3 Outputs
2 O0 Outputs 9 I3 Inputs
3 I1 Inputs 10 O4 Outputs
4 O1 Outputs 11 I4 Inputs
5 I2 Inputs 12 O5 Outputs
6 O2 Outputs 13 I5 Inputs
7 GND Inputs 14 VCC

IC SST39SF020A PLCC32

Pin No. Pin Name Description Pin No. Pin Name Description

1 AMS1- A0 Address Inputs 5 WE# Write Enable
2 DQ7-DQ0 Data Input/output 6 VDD Power Supply
3 CE# Chip Enable 7 VSS Ground
4 OE# Output Enable 8 NC No Connection

IC GM5221 PQFP-208 (DVI Input Port)

Pin No. Pin Name Description

113 AVDD_IMB_3.3 Analog VDD(3.3V) for internal biasing gircuits. Must be bypassed with

capacitors

114 REXT External termination resistor.

A 1% 250Ω, resistor should by connected from this pin to AVDD_IMB

115 AGND_IMB Analog GND for internal biasing circuits. Must be connected directly to

the ground plane.

116 VDD_RX2_1.8 VDD(1.8V) for TMDS input pair 2.

Must be bypassed with external capacitor to GND_RX2.

117 AGMD_RX2 Analog GND for TMDS input pair 2. Must be connected directly to the

analog ground plane.
118 RX2+ TMDS input pair2
119 RX2- TMDS input pair2
120 AVDD_RX2_3.3 Analog VDD(3.3V) for TMDS input pair 2. Must be bypassed with

capacitor to AGND_RX2.
121 VDD_RX1_1.8 VDD(1.8V) for TMDS input pair 2. Must be bypassed with external

capacitor to GND_RX1.
122 AGND_RX1 Analog GND for TMDS input pair 1. Must be connected directly to the

analog ground plane.
123 RX1+ TMDS input pair 1
124 RX- TMDS input pair 1
125 AVDD_RX1_3.3 Analog VDD (3.3V) for TMDS input pair 2. Must be bypassed with to

AGND_RX1.

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INFORMATION OF ICS

IC GM5221 PQFP-208 (DVI Input Port)

Pin No. Pin Name Description

126 VDD_RX0_1.8 VDD (1.8V) for TMDS input pair 2. Must be bypassed with external

capacitor to GND_RX0

127 AGND_RX0 Analog GND for TMDS input pair 0. Must be connected directly to the

analog ground plane.
128 RX0+ TMDS input pair 0
129 RX0- TMDS input pair 0
130 AVDD_RX0_3.3 Analog VDD (3.3V) for TMDS input pair 2. Must be bypassed with

capacitor to AGND_RX0
131 AGND_RXC Analog GND for TMDS input clock pair. Must be connected directly to

the analog ground plane.
132 RXC+ TMDS input clock pair
133 RXC- TMDS input clock pair
134 AVDD_RXC_3.3 Analog VDD (3.3V) for TMDS input clock pair.

Must be bypassed with 100pF capacitor to AGND_RXC.
136 GND_RXPLL Analog GND for the TMDS receiver internal PLL.

Must be connected directly to the analog ground plane.
137 VDD_RXPLL_1.8Analog VDD (1.8V) for the TMDS receiver internal PLL.

Must be bypassed with a capacitor to AGND_RXPLL.
138 CLK_OUT Reserved, unconnected.

IC GM5221 PQFP-208 (RCLK PLL Pins)

Pin No. Pin Name Description

165 GND_RPLL Digital GND for ADC clocking circuit. Must be directly connected to the

digital system ground plane.
166 VDD_RPLL_1.8 Digital power (1.8V) for ADC digital logic. Must be bypassed with

capacitor to GND1_ADC.
168 AGND_RPLL Analog ground for the Reference DDS PLL. Must be directly connected

to the analog system ground plane.
169 XTAL Crystal oscillator output.
170 TCLK Reference clock (TCLK) from the 14.3MHz crystal oscillator.
171 AVDD_RPLL_3.3 Analog VDD (3.3V)

IC GM5221 PQFP-208 (Input Video Port)

Pin No. Pin Name Description

112 VCLK Video port data clock input. Up to 75Mhz

[Input, 5V-tolerant]
111 GPIO23/VDATA0 Input YUV data in 8-bit BT656 or GPIO23:16 if VPORT is disabled.
110 GPIO22/VDATA1 [Bi-Directional, 5V-tolerant]
109 GPIO21/VDATA2
108 GPIO20/VDATA3
107 GPIO19/VDATA4
106 GPIO18/VDATA5
103 GPIO17/VDATA6
102 GPIO16/VDATA7

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INFORMATION OF ICS

IC GM5221 PQFP-208 (Analog Input Port)

Pin No. Pin Name Description

141 AVDD_BLUE_3.3Analog power (3.3V) for the blue channel. Must be bypassed with

capacitor to AGND_BLUE pin on system board.
142 BLUE+ Positive analog input for Blue channel.
143 BLUE- Negative analog input for Blue channel.
144 AGND_BLUE Analog ground for the blue channel. Must be directly connected to the

analog system ground plane.
145 AVDD_GREEN_3.3 Analog power (3.3V) for the green channel. Must be bypassed with

capacitor to AGND_GREEN pin on system board.
146 SOG_MCSS Dedicated Sync-on-Green pin.

NOTE: This pin requires the same AC-couple capacitor (if applicable)

like the regular RGB input pins.

147 GREEN+ Positive analog input for Green channel.
148 GREEN- Negative analog input for Green channel.

NOTE: For SOG support this pin should be pulled down to GND

through a 1MΩ, resistor.

149 AGND_GREEN Analog ground for the green channel. Must be directly connected to the

analog system ground plane.
150 AVDD_RED_3.3 Analog power (3.3V) for the red channel. Must be bypassed with

capacitor to AGND_RED pin on system board.
151 RED+ Positive analog input for Red channel.
152 RED- Negative analog input for Red channel.
153 AGND_RED Analog ground for the red channel. Must be directly connected to the

analog system ground plane.
154 AVDD_ADC_3.3 Analog power (3.3V) for ADC Analog blocks that are shared by all three

channels. Includes bandgap reference, master biasing and full scale

adjust. Must be bypassed with capacitor th AGND_ADC pin on system

board.
156 AGND_ADC Analog ground for ADC analog blocks that are shared by all three

channels. Includes bandgap reference, master biasing and full scale

adjust. Must be directly connected to analog system ground plane.
163 GND1_ADC Digital GND for ADC clocking circuit. Must be directly connected to the

digital system ground plane.
164 VDD1_ADC_1.8 Digital power (1.8V) for ADC encoding logic. Must be bypassed with

capacitor to GND1_ADC pin on system board.
181 HSYNC/CSYNC ADC input horizontal sync or composite sync input.

[Input, Schmitt trigger with 1V hysteresis and 1.65V threshold. 5V-tolerant]
182 VSYNC ADC input vertical sync.

[Input, Schmitt trigger with 1V hysteresis and 1.65V threshold. 5V-tolerant]

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INFORMATION OF ICS

IC GM5221 PQFP-208 (System Interface)

Pin No. Pin Name Description

81 GPIO0 General-purpose input/output signals
82 GPIO1 [Bi-directional, Schmitt trigger, 5V-tolerant]
83 GPIO2
84 GPIO3
85 GPIO4
88 GPIO5
89 GPIO6
90 GPIO7/IRQin General-purpose input/output signals [Bi-directional, Schmitt trigger, 5V­91 GPIO8/IRQout tolerant] or OCM interrupt and chip status.
92 GPIO9/SCL General-purpose input/output signals [Bi-directional, Schmitt trigger, 5V­93 GPIO10/SDA tolerant] or master device on serial interface bus.
98 GPIO11/PWM0 General-purpose input/output signals or PWM signals. [Bi-directional,
99 GPIO12/PWM1 Schmitt trigger, 5V-tolerant]
100 GPIO13/PWM2
101 GPIO14/PWM3
69 GPIO15 General-purpose input/output signals [Bi-directional, Schmitt trigger, 5V-tolerant]
77 DDC_SCL_VGA DDC2Bi clock for VGA Port
78 DDC_SDA_VGA DDC2Bi data for VGA Port [internal 10KΩ, pull-up resistor]
79 DDC_SCL_DVI DDC2Bi and HDCP clock for DVI Port
80 DDC_SDA_DVD DC2Bi and HDCP data for DVI Port [internal 10KΩ, pull-up resistor]
178 RESETn Hardware Reset (active low) [Schmitt trigger, 5V-tolerant] Connect to

ground with 0.01uF (or larger) capacitor. See section, Chip

Initialization, for detail
172 LBADC_VDD_3.3 Analog 3.3V power supply for general-purpose ADC
173 LBADC_IN1 LBADC channel 1
174 LBADC_IN2 LBADC channel 2
175 LBADC_IN3 LBADC channel 3
176 LBADC_RETURN Analog Ground (signal return path) for LBADC channels 1, 2 and 3
177 LBADC_GND Ground
71 HOST_SCL/UART_DI Host input clock or 186 UART Data In or JTAG clock signal. [Input,

Schmitt trigger, 5V-Tolerant]
72 HOST_SCL/UART_DO Host input data or 186 UART Data out or JTAG mode signal.

[Bi-directional, Schmitt trigger, slew rate limited, 5V-Tolerant]
66 JTAG_TDIJTAG Data input signal.
64 JTAG_TDO JTAG data output signal.
56 JTAG_RESET JTAG reset signal.

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INFORMATION OF ICS

IC GM5221 PQFP-208 (LVDS Display Interface)

Pin No. Pin Name Description

11 AVDD_LV_E_3.3 Digital Power for LVDS outputs. Connect to digital 3.3V supply.
12 AVSS_LV_E Ground for LVDS outputs.
13 CH3P_LV_E
14 CH3N_LV_E
15 CLKP_LV_E
16 CLKN_LV_E
17 CH2P_LV_E
18 CH2N_LV_E
19 CH1P_LV_E
20 CH1N_LV_E
21 CH0P_LV_E
22 CH0N_LV_E
23 AVSS_LV_E Ground for LVDS outputs.
24 AVDD_LV_E_3.3 Digital Power for LVDS outputs. Connect to digital 3.3V supply.
25 AVSS_LV Ground for LVDS outputs.
26 AVDD_LV_3.3 Analog Power for LVDS outputs. Connect to analog 3.3V supply.
27 AVDD_LV_O_3.3 Digital Power for LVDS outputs. Connect to digital 3.3V supply.
28 AVSS_LV_O Ground for LVDS outputs.
29 CH3P_LV_O
30 CH3N_LV_O
31 CLKP_LV_O
32 CLKN_LV_O
33 CH2P_LV_O
34 CH2N_LV_O
35 CH1P_LV_O
36 CH1N_LV_O
37 CH0P_LV_O
38 CH0N_LV_O
39 AVSS_LV_O Ground for LVDS outputs.
40 AVDD_LV_O_3.3 Digital Power for LVDS outputs. Connect to digital 3.3V supply.
67 PPWR Panel Power Control [Tri-state output, 5V-tolerant]
68 PBIAS PANEL Bias Control (backlight enable) [Tri-state output, 5V- tolerant]
43 RESERVED Reserved, unconnected.
44 RESERVED Reserved, unconnected.
45 RESERVED Reserved, unconnected.
46 RESERVED Reserved, unconnected.
47 RESERVED Reserved, unconnected. (Display Enable for TTL interface)
48 RESERVED Reserved, unconnected. (Display Horizontal Sync for TTL interface)
49 RESERVED Reserved, unconnected. (Display Vertical Sync for TTL interface)

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INFORMATION OF ICS

IC GM5221 PQFP-208 (TTL Display Interface)

Pin No. Pin Name Description

11 AVDD_LV_E_3.3 Analog Power for TTL outputs. Connect to analog 3.3V supply
12 AVSS_LV_E Ground
13 ER0 Red channel bit 0 Not used.
14 ER1 Red channel bit 1 Not used.
15 ER2 Red channel bit 2 Red channel bit 0
16 ER3 Red channel bit 3 Red channel bit 1
17 ER4 Red channel bit 4 Red channel bit 2
18 ER5 Red channel bit 5 Red channel bit 3
19 ER6 Red channel bit 6 Red channel bit 4
20 ER7 Red channel bit 7 Red channel bit 5
21 EG0 Green channel bit 0 Not used.
22 EG1 Green channel bit 1 Not used.
23 AVSS_LV_E Ground for TTL outputs.
24 AVDD_LV_E_3.3 Digital Power for TTL outputs. Connect to digital 3.3V supply.
25 AVSS_LV Ground for TTL outputs.
26 AVDD_LV_3.3 Digital Power for TTL outputs. Connect to digital 3.3V supply.
27 AVDD_LV_O_3.3 Digital Power for TTL outputs. Connect to digital 3.3V supply.
28 AVSS_LV_O Ground for TTL outputs.
29 EG2 Green channel bit 2 Green channel bit 0
30 EG3 Green channel bit 3 Green channel bit 1
31 EG4 Green channel bit 4 Green channel bit 2
32 EG5 Green channel bit 5 Green channel bit 3
33 EG6 Green channel bit 6 Green channel bit 4
34 EG7 Green channel bit 7 Green channel bit 5
35 EB0 Blue channel bit 0 Not used.
36 EB1 Blue channel bit 1 Not used.
37 EB2 Blue channel bit 2 Blue channel bit 0
38 EB3 Blue channel bit 3 Blue channel bit 1
39 AVSS_LV_O Ground
40 AVDD_LV_O_3.3 Digital Power for TTL outputs. Connect to digital 3.3V supply.
43 EB4 Blue channel bit 4 Blue channel bit 2
44 EB5 Blue channel bit 5 Blue channel bit 3
45 EB6 Blue channel bit 6 Blue channel bit 4
46 EB7 Blue channel bit 7 Blue channel bit 5
47 DEN Display Enable
48 DHS Display Horizontal Sync.
49 DVS Display Vertical Sync.
55 DCLK Display Pixel Clock.
67 PPWR Panel Power Control [Tri-state output, 5V-tolerant]
68 PBIAS Panel Bias Control (backlight enable) [Tri-state output, 5V-tolerant]

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INFORMATION OF ICS

IC GM5221 PQFP-208 (Miscellaneous)

Pin No. Pin Name Description

1 ROM-DATA3 External ROM DATA3
2 ROM-DATA2 External ROM DATA2
3 ROM-DATA1 External ROM DATA1
4 ROM-DATA0 External ROM DATA0
5 ROM-OEn External ROM Output Enable
6 ROM-WEn External ROM Write Enable
7 ROM-CSN External ROM Crip Select Enable
8,42,51, CRVSS Ground for cord power
74,76,87,
94,97,
140,180
9,41,75, CVDD_18 Cord Digital power. Connect to digital 1.8V supply.
86,96,
139,179
10,57,58, RESERVED Reserved, unconnected
59,60,61,
62,63,65,
70,135,
155,167
50,73,95 RVDD_33 Ring VDD power. Connect to digital 3.3V supply
52,53,54, N.C. No connected
104,105,
157,158,
159,160,
161,162

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INFORMATION OF ICS

IC SAA5264PS/M3/0104 SDIP52

Pin No. Pin Name Description

1 PWM Output for 14-bit high precision Pulse Width Modulator(PWM)
2 PWM0 Output for 6-bit PWMs 0 to 6
3 PWM1
4 PWM2
5 PWM3
6 PWM4
7 PWM5
8 PWM6

9 ADC0 Inputs for the software Analog-to-Digital-Converter(ADC) facility
10 ADC1
11 ADC2
12 ADC3
13 VSCC Core ground
14 SCL(NVRAM) I2C-bus Serial Clock input to Non-Volatile RAM
15 SDA(NVRAM) I2C-bus Serial Data input/output (Non-Volatile RAM)
16 Input/output for general use
17 Input/output for general use
18 Input/output for general use
19 8mA current sinking capability for direct drive of Light Emitting
20 Diodes (LEDs)
21 Input/output for general use
22 VSSA Analog ground
23 CVBS0 Composite Video Baseband Signal(CVBS) input; a positive-going
24 CVBS1 1 V (peak-to peak) input is required; connected via a 100 nF capacitor
25 SYNC_FILTER Sync-pulse-filter input for CVBS; this pin should be connected to VSSA

via a 100nF capacitor

26 IREF Reference current input for analog circuits; for correct operation a

24kΩ resistor should be connected to VSSA

27 FRAME Frame de-interlace output synchronized with the VSYNC pulse to

produce a non-interlaced display by adjustment of the vertical

deflection circuits
28 TEST Not avallable; connect this pin to VSSA
29 COR Contrast reduction:open-drain, active LOW output which allows selective

contrast reduction of the TV picture to enhance a mixed mode display
30 PWM7 Output for 6-bit PWM7
31 VDDA Analog supply voltage (3.3V)
32 B Blue colour information pixel rate output
33 G Green colour information pixel rate output
34 R Red colour information pixel rate output
35 VDS Video/data switch push-pull output for pixel rate fast blanking
36 HSYNC Horizontal sync pulse input: Schmitt triggered for a Transistor Transistor

Lever(TTL) version; the polarity of this pulse is programmable by

register bit TXT1.H POLARITY

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INFORMATION OF ICS

IC SAA5264PS/M3/0104 SDIP52

Pin No. Pin Name Description

37 VSYNC Vertical sync pulse input; Schmitt triggered for a TTL version; the

polarity of this pulse is programmable by register bit TXT1. V POLARITY
38 VSSP Periphery ground
39 VDDC Core supply voltage (+3.3V)
40 OSCGND Crystal oscillator ground
41 XTALIN 12 MHz crystal oscillator input
42 STALOUT 12 MHz crystal oscillator output
43 RESET Reset input; if this pin is HIGH for at least 2 machine cycles (24 oscillator

periods) while the oscillator is running, the device resets; this pin

should be connected to VDDP via a capacitor
44 VDDP Periphery supply voltage (+3.3V)
45 Input/output for general use
46 Input/output for general use
47 Input/output for general use
48 Input/output for general use
49 SCL I2C-bus Serial Clock input from application
50 SDA I2C-bus Serial Data input/output (application)
51 Input/output for general use
52 Input/output for general use

IC TPA1517NE DIP20

Pin No. Pin Name Description

1 IN1 IN1 is the audio input for channel 1.
2 SGND SGND is the input signal ground reference.
3 SVRR SVRR is the midrail bypass.
4 OUT1 OUT1 is the audio output for channel1.
5 PGND PGND is the power ground reference.
6 OUT2 OUT2 is the audio output for channel 2.
7 VCC VCC is the supply voltage input.
8 M/SB M/SB is the mute/standby mode enable. When held at less than 2 V,

this signal enables the TPA1517 for standby operation. When held
between 3.5V and 8.2V,this signal enables the TPA1517 for mute
operation. When held above 9.3V, the TPA1517 operates normally.

9 IN2 IN2 in the audio input for channel 2.

10-20 GND/HS GND/HS are the ground and heatsink connections. All GND/HS

terminals are connected directly to the mount pad for thermal-enhanced
operation.

IC TVP5146PFP S-PQFP-G80 (Clock Signals)

Pin No. Pin Name Description

40 DATACLK Line-locked data output clock.
74 XTAL1 External clock reference input. it may be connected to an external

oscillator with a 1.8V compatible clock signal or a 14.31818-MHz
crystal oscillator.

75 XTAL2 External clock reference output. Not connected if XTAL1 is driven by an

external single-ended oscillator.

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INFORMATION OF ICS

IC TVP5146PFP S-PQFP-G80 (Analog Video)

Pin No. Pin Name Description

80 VI_1_A
1 VI_1_B VI_1_x: Analog video input for CVBS/Pb/B/C
2 VI_1_C VI_2_x: Analog video input for CVBS/Y/G
7 VI_2_A VI_3_x: Analog video input for CVBS/Pr/R/C
8 VI_2_B VI_4_x: Analog video input for CVBS/Y
9 VI_2_C Up to 10 composite, 4 S-video, and 2 composite or 3 component
16 VI_3_A video input(or a combination thereof) can be supported.
17 VI_3_B The inputs must be ac-coupled. The recommended coupling
18 VI_3_C capacitor is 0.1μF.
23 VI_4_A The possible input configurations are listed in the input select

register at I2C subaddress 00h

IC TVP5146PFP S-PQFP-G80 (Digital Video)

Pin No. Pin Name Description

57,58 C[9:0]/ Digital video output of CbCr, C[9] is MSB and C[0] is LSB. Unused
59,60, GPIO[9:0] outputs can be left unconnected. Also, these terminals can be
63,64, programmable general-purpose I/O.
65,66, For the 8-bit mode, the two LSBs are ignored.
69,70
58 D_BLUE Digital BLUE input from overlay device.
59 D_GREEN Digital GREEN input from overlay device.
60 D_RED Digital RED input from overlay device.
57 FSO Fast-switch overlay between digital RGB and any video.
43,44 Y[9:0] Digital video output of Y/YCbCr, Y[9] is MSB and Y[0] is LSB.
45,46, For the 8-bit mode, the two LSBs are ignored. Unused outputs
47,50, can be left unconnected.
51,52,
53,54

IC TVP5146PFP S-PQFP-G80 (Miscellaneous Signals)

Pin No. Pin Name Description

35 FSS/GPIO Fast-switch(blanking) input. Switching signal between the synchronous

component video(YPbPr/RGB) and the composite video input.
Programmable general-purpose I/O

37 GLCO/I2CA Genlock control output(GLCO). Two Genlock data formats are available:

TI format and real time control(RTC) format.

During reset, this terminal is an input used to program the I2C address LSB.
30 INTREQ Interrupt request
33 PWDN Power down input: 1=Power down 0=Normal mode
34 RESETB Reset input, active low

IC TVP5146PFP S-PQFP-G80 (Host Interface)

Pin No. Pin Name Description

28 SCL I2C clock input
29 SDA I2C data bus

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INFORMATION OF ICS

IC TVP5146PFP S-PQFP-G80 (Power Supply)

Pin No. Pin Name Description

26 AGND Analog ground. Connect to analog ground.
13 A18GND_REF Analog 1.8-V return
12 A18VDD_REF Analog power for reference 1.8V
79 CH1_A18GND
10 CH2_A18GND Analog 1.8-V return
15 CH3_A18GND
24 CH4_A18GND
78 CH1_A18GND
11 CH2_A18GND Analog power. Connect to 1.8 V.
14 CH3_A18GND
25 CH4_A18GND
3 CH1_A33GND
6 CH2_A33GND Analog 3.3-V return
19 CH3_A33GND
22 CH4_A33GND
4 CH1_A33VDD
5 CH2_A33VDD Analog power. Connect to 3.3 V.
20 CH3_A33VDD
21 CH4_A33VDD
27,32,42 DGND Digital return
56,68
31,41,55 DVDD Digital power. Connect to 1.8 V.
67
39,49,62 IOGND Digital power return
38, 48,61 IOVDD Digital power. Connect to 3.3 V or less for reduced noise.
77 PLL_A18GND Analog power return
76 PLL_A18VDD Host Interfacewer. Connect to 1.8 V.

IC TVP5146PFP S-PQFP-G80 (Sync Signals)

Pin No. Pin Name Description

72 HS/CS/GPIO Horizontal sync output or digital composite sync output Programmable

general-purpose I/O
73 VS/VBLK/GPIO Vertical sync output (for modes with dedicated VSYNC) or VBLK

output Programmable general-purpose I/O
71 FID/GPIO Odd/even field indicator output. This terminal needs a pulldown resistor.

Programmable general-purpose I/O
36 AVID/GPIO Active video indicator output

Programmable general-purpose I/O

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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 in

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.
Please do not degrade the safety of this TV through improper servicing.

Part No. Description

PCB ASSEMBLY

G771-15LB01-01 Control Keys PCB Ass’y
G771-15LB02-01 15” Receiver PCB Ass’y
G771-15LB03-01 Tuner PCB Ass’y
G771-20LB01-01 Control Keys PCB Ass’y
G771-20LB02-01 20” Receiver PCB Ass’y
G771-20LB03-01 Tuner PCB Ass’y
G771E15LB01-01 Main PCB Ass’y
G771E20LB01-01 Main PCB Ass’y
G7801-001001 PCB Ass’y Power BL1504015-06A
G7801-002001 PCB Ass’y Power BL2006009-07

SUPPLIED ACCESSORIES

G7101-001001 AC Adaptor SAWA-01-451
G7101-002001 AC Adaptor SAWA-02-521
G7501-001001 Remote Control CLE-968

Cxx-LC880SNT
15” 20”

LCD PANEL

G6203-001001 Display LCD LTM150XH-L06
G6203-002001 Display LCD A20SN02-PV4

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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. Description Circuit No.

1 G1102-001001 COIL FIX C 120K T04 0603 L47
2 G1102-001002 COIL FIX C 2R7K T04 0603 L34 L35 L36
3 G1102-002001 COIL FIX C 3R3K T08 1206 L48 L49 L50
4 G1107-001001 COIL FIX 33uH 16.5X9 24.5T L15
5 G1301-001006 CAPACITOR EC V A SMA 220M C102 C18 C233 C29 C38 C48

16DC T05 4X7 C73 C75 CA1 CA5 CA7 CB10

CB9

6 G1301-001018 CAPACITOR EC V A SMA 100M C168 CA50

16DC T05 4X7

7 G1301-001019 CAPACITOR EC V A SMA 3R3M CA20

50DC T05 4X7

8 G1301-001021 CAPACITOR EC V A SMA 2R2M CA40

50DC T05 4X7

9 G1301-001024 CAPACITOR EC V A SMA 100M C12 C13 C14 C3 CA16 CA23

25DC T05 4X7 CA25 CA30 CA31 CA34 CA35

CA48

10 G1301-001026 CAPACITOR EC V A SMA 101M C104 C105 C110 C111 C125

16DC T05 6X7 C236 C237 C78 C94 C95 CA54

11 G1301-001031 CAPACITOR EC V A SMA 470M CB1

16DC T05 5X7

12 G1301-001111 CAPACITOR EC V A SMA 331M C82 C83

16DC T05 8X9

13 G1301-002015 CAPACITOR EC V A SAII 471M C79 CA13 CA43 CA9

25DC T05 8X14

14 G1323-001013 CAPACITOR CE C TC CG331J C127 C141 C148 C164 CA32

50DC T04 0603 CA41 CA61 CA65

15 G1323-001024 CAPACITOR CE C TC CG150J C169 C170 C171

50DC T04 0603

16 G1323-001026 CAPACITOR CE C TC CG330J C117 C118

50DC T04 0603

17 G1323-001027 CAPACITOR CE C TC CG470J C229 C230 C231 C232 C76

50DC T04 0603 CA14 CA15 CA51

18 G1323-001029 CAPACITOR CE C TC CG221J C46 C47 C55 C64 C66

50DC T04 0603

19 G1323-001035 CAPACITOR CE C TC CG220J C88 CA37 CA38

50DC T04 0603

20 G1323-001038 CAPACITOR CE C TC CG560J CA18 CA33 CB2 CB3

50DC T04 0603

21 G1323-001083 CAPACITOR CE C TC CH5R0J C58 C59

50DC T04 0603 CB4 CB5 CB6 CB7 CB8

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C15-LC880SNT & C20-LC880SNT SC No. 0013E

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Copyright Digital Media Systems Group, (2005) All rights reserved