Hitachi 32LD7200 User manual

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety

Precautions”and“ProductSafetyNotices”inthisservicemanual.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»

etles«Noticesdesécuritéduproduit»présentésdansleprésentmanuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise

zurProduktsicherheit“indiesemWartungshandbuchzulesen.

SERVICE MANUAL

MANUEL D'ENTRETIEN

WARTUNGSHANDBUCH

Data contained within this Service

manual is subject to alteration for

improvement.

Les données fournies dans le présent

manuel d’entretien peuvent faire l’objet

de modifications en vue de perfectionner

leproduit.

Die in diesem Wartungshandbuch

enthaltenen Spezifikationen können sich

zwecksVerbesserungenändern.

SPECIFICATIONSAND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

Colour Television

March 2005

No. 0207

32LD7200

32LD7200 (PW2L)

CAUTION FOR SAFETY

Please read this page before repair the monitor.

This page explains to following items for keep the safety of set and prevent to accident during

repair work.

We explain by symbol at happen the damage or injury when took wrong repair.

Warning This symbol means "possible to die or heavy damage"

Caution This symbol means "possible to damage or something will break"

We made the symbol as below, which are kind of following items.

This symbol means "CAUTION"

This symbol means "POSSIBLE to

ELECTRIC SHOCK"

This symbol means "MUST"

This symbol means "DO NOT"

Should be follows to instructions.

We indicates to cabinet, chassis and parts

by label, which are special attention part.

Please follow to note and [Safety Instructions]

of User’s Manual.

Prevent the electric shock.

Please take care during working because

monitor has high voltage part and power

supply part.

Possible to die if you tough to these place

by miss take.

Please disconnect power plug during

overhaul, reassemble or change parts.

You will die or take damage by electric

shock if you touch to live part.

Use recommended components.

Please use to same characteristic compo-

nent, which is same as previous for your

safety and keep reliability especially marked

by in parts list and circuit diagram.

It is reason of electric shock or fire if you

use non-recommended component.

Should be kept same style of wiring or component.

Monitor uses tubes or tapes, which made

by insulator, and some components are

keep distance from surface of PWB for

safety.

Internal leads kept from hot part or high voltage

part by clamper or styling, so please return to

original condition for prevent to electric shock

or fire.

Should be done safety check after finished.

Every part (removed screws, component

and wiring) should be returned to previous

condition.

Check around repair position for make

damage by miss take and measure the

insulated impedance by meg-ohm meter.

Confirm the value of impedance, that

value is more than 4M ohm.

It is reason for electric shock or fire if that

value is less than 4M ohm.

Nobody can check and repair to the code

and combination circuit of HDCP.

Never remove the shield case, which is

assembled to the code and combination

circuit of HDCP.

WARNING

32LD7200 (PW2L)

PRECAUTIONS

How to clean the LCD screen panel of the monitor

Before cleaning the monitor, turn off the monitor and disconnect the power plug from the power outlet.

To prevent scratching or damaging the LCD screen face, do not knock or rub the surface with sharp or hard

objects. Clean the screen with a soft cloth moistened with warm water and dry with a soft cloth. If it is not

enough, then use a cloth with mild detergent. Do not use harsh or abrasive cleaners.

How to clean the cabinet of the monitor

Use a soft cloth to clean the cabinet and control panel of the monitor. When excessively soiled dilute a neutral

detergent in water, wet and wring out the soft cloth and afterward wipe with a dry soft cloth.

Never use acid/alkaline detergent, alcoholic detergent, abrasive cleaner, powder soap, OA cleaner, car wax,

glass cleaner, etc. especially because they would cause discoloration, scratches or cracks.

1. Features

Large-screen, high-definition LCD display panel

The 32-inch LCD display panel, with a resolution of 1366 (H) x 768 (V) pixels, creates a high-definition, large-

screen(aspect ratio : 16:9) and low-profile flat display. Free from electromagnetic interferences from geomagnetic

sources and ambient power lines, the panel produces high-quality display images free from color misconvergence

and display distortion.

High Performance Digital Processor

A wide range of input signals can be handed,including composite, component,and HDMI.High Definition Digital Pro-

cessor creates the fine-textured image with dynamic contrast. In addition, it corresponds to a broad array of per-

sonal computer signals, from 640 x 400 and 640 x 480 VGA to 1600 x 1200 UXGA.(Analog Input)

Easy-to-use remote control and on screen display system

The remote control included eases the work of setting display controls. Further, the on-screen display system,

displays the status of signal reception and display control settings in an easy-to-view fashion.

Connecting to an Audio Visual Device

• Three SCART terminals, a composite/S Terminal*1, a component terminal*2, a HDMI terminal have been added.

A composite video output terminal is also provided as a monitoring output.

*1 A composite/S terminal = A side input

• A wide range of devices other than personal computers can also be connected.

• A RGB input is possible to switch to component signal from the Menu screen.

Power Swivel Feature

It allows to turn the LCD display left or right within ± 30 degree using the remote control.

32LD7200 (PW2L)

2. Specifications

Panel

Ambient

conditions

Power supply

Power consumption/at standby

Audio output

(RGB input)

Input terminals

RF Video System

Input signals

Sync signals

(RF input)

(Video input)

Output Signal

Temperature

Relative humidity

Net dimensions

(excluding Speakers/Stand)

Net weight

(excluding Speakers/Stand)

Resolution

Display

dimensions

Operating : 5˚C to 35˚C, Storage : 0˚C to 40˚C

Operating : 20% to 80%, Storage : 20% to 90% (non-condensing)

AC100 - 240V, 50/60Hz

RGB1 DVI input terminal (DVI-D)

RGB1 audio input terminal (3.5mm Stereo Mini Jack)

RGB2 analog RGB input terminal (D-sub 15-pin)

RGB2 audio input terminal (3.5mm Stereo Mini Jack)

0.7 V/1.0 Vp-p, analog RGB (Recommended Signal)

480i, 576i, 480p, 576p, 1080i/50, 1080i/60, 720p/50*1, 720p/60

H/V separate, TTL level [2KΩ]

H/V composite, TTL level [2KΩ]

Sync on green, 0.3 Vp-p [75 Ω]

ANT : 75Ω Unbalanced

PAL B, G, H / I / D, K

SECAM B, G / K1 / L, L’ / (D, K)*2

OUTPUT (MONITOR): composite video monitor-output terminal (RCA)

OUTPUT (MONITOR): L/R audio monitor- output terminal (RCA)

OUTPUT (HEADPHONE): L/R audio monitor- output terminal (3.5mm Stereo Mini Jack)

1015 (W) x 618 (H) x 340 (D) mm

1366(H) x 768 (V) pixels

Approx. 32 inches (698 (H) x 392 (V) mm, diagonal 800mm)

25.0kg

158W / <1W ; <2W (When DVI)

speaker 12W + 12W (6Ω)

AV1: composite video/S video/L/R audio input terminal (SCART)

AV2: composite video/RGB/L/R audio input terminal (SCART)

AV3: composite video/RGB/L/R audio input terminal (SCART)

AV4: composite video/Y/PB/PRvideo/L/R audio input terminal (RCA)

AV5: composite video/S video/L/R audio input terminal (RCA)

AV6: HDMI input terminal

AV1: PAL, SECAM, NTSC3.58, NTSC4.43

AV2: PAL, SECAM, NTSC3.58, NTSC4.43, RGB

AV3: PAL, SECAM, NTSC3.58, NTSC4.43, RGB

AV4: PAL, SECAM, NTSC3.58, NTSC4.43

AV4: 480i, 576i, 480p, 576p, 720p/50, 720p/60, 1080i/50, 1080i/60,

AV5: PAL, SECAM, NTSC3.58, NTSC4.43

AV6: HDMI input signal

Applicable video signals for each input terminal

Terminal RCA/S-video/SCART DVI D-sub

Signal CVBS S-video Component SCART (RGB) PC STB RGB Component

AV1

AV2

AV3

AV4

AV5

AV6

( :Available)

HDMI

RGB1

RGB2

*1720/50 is supported by RGB1(DVI-STB)

*2The SECAM D,K system might not be normally received, depending on the model.

32LD7200 (PW2L)

3. Service points

Lead free solder

This product uses lead free solder (unleaded) to help preserve the environment. Please read these instructions

before attempting any soldering work.

Caution: Always wear safety glasses to prevent fumes or molten solder from getting into the eyes. Lead free

solder can splatter at high temperatures (600˚C).

Lead free solder indicator

Printed circuit boards using lead free solder are engraved with an "F."

Properties of lead free solder

The melting point of lead free solder is 40-50˚C higher than leaded solder.

Servicing solder

Solder with an alloy composition of Sn-3.0Ag-0.5Cu or Sn-0.7Cu is recommended.

Although servicing with leaded solder is possible, there are a few precautions that have to be taken. (Not taking

these precautions may cause the solder to not harden properly, and lead to consequent malfunctions.)

Precautions when using leaded solder

Remove all lead free solder from soldered joints when replacing components.

If leaded solder should be added to existing lead free joints, mix in the leaded solder thoroughly after the lead

free solder has been completely melted (do not apply the soldering iron without solder).

Servicing soldering iron

A soldering iron with a temperature setting capability (temperature control function) is recommended.

The melting point of lead free solder is higher than leaded solder. Use a soldering iron that maintains a high

stable temperature (large heat capacity), and that allows temperature adjustment according to the part being

serviced, to avoid poor servicing performance.

Recommended soldering iron:

Soldering iron with temperature control function (temperature range: 320-450˚C)

Recommended temperature range per part:

Part Soldering iron temperature

Mounting (chips) on mounted PCB 320˚C±30˚C

Mounting (chips) on empty PCB 380˚C±30˚C

Chassis, metallic shield, etc. 420˚C±30˚C

SW PWB, LED/RECEIVER PWB, SP TERMINAL(L/R) PWB, SUB POWER PWB,

MAIN POWER PWB

AUDIO PWB, JOINT PWB, Swievel PWB, HDMI PWB, control PWB

VIDEO PWB

TUNER PWB

The PWB assembly which has used lead free solder

32LD7200 (PW2L)

4. Component names

[Main unit]

[Remote control]

POWER button

INPUT SELECT buttons

MENU button

OK button

SOUND MODE button

VOLUME UP/DOWN button

PROGRAM SELECT buttons

(TV)

MULTI MODE button

RECALL button

FUNCTION SELECT button

DVD CONTROL buttons

FREEZE/RETURN button

SELECT/ADJUST button

PICTURE MODE button

CH I/CH II button (TV)

CHANNEL UP/DOWN button (TV)

MUTE button

MULTI PICTURE button

SWIVEL button

T/TEXT button

(TV)

Control panel

• ( ) indicates the function while the MENU is displayed on the screen.

SUB-POWER button

VOLUME UP/DOWN buttons

(ADJUST buttons)

CHANNEL UP/DOWN buttons

( SELECT buttons)

MENU button

INPUT SELECT button

(OK button)

Remote-control receiver

Indicating lamp

• The main power switch is located on the top.

Main power switch

• Adjustment buttons are located

on the top.

Front

Rear

CLE-960

32LD7200 (PW2L)

5. New adoption technology

[System control micom I001(M3062)]

Pin function table

No. PIN name I/O

1VREF (+5.0V) I

2+5.0V I

3NC I/O

4OSD_DATA I/O

5OSD_CLK I/O

6HP_VOL I/O

7FE.AGC_O(M) I/O

8 DATA_OUT(FC) I/O

9 DATA_IN(FC) I/O

10 CLK(FC) I/O

11 EDID_PROTECT I/O

12 TRAP_MAIN I/O

13 GND I

14 CNVSS(FLASH) I

15 DSUB COMP I/O

16 RGBSW I/O

17 RESET I

18 16MHz oscillation O

19 GND I

20 16MHz oscillation I

21 +5.0V I

22 NMI(+5.0V) I

23 RMCON(AVC) I/O

24 V.FREQ_2(VIDEO) I/O

25 V.FREQ_1/3 I/O

26 SCV.SYNC I/O

27 IRQ䋨PM-IRQ) I/O

28 MCV.SYNC I/O

29 POWER_LED I/O

30 H.FREQ_2(VIDEO) I/O

31 PDP_WVGA_LCD_SW_2 I/O

32 H.FREQ_1/_3 I/O

33 PDWN I/O

34 RXD2 I/O

35 TXD2 I/O

36 TXD1(RS232C/FLASH) I/O

37 I

38 RXD1(RS232C/FLASH) I/O

39 I

40 SCLK(FLASH) I/O

41 BUSY(FLASH) I/O

42 TXD0(PDP) I/O

43 RXD0(PDP) I/O

44 SDA4(panel) I/O

45 SCL4(panel) I/O

46 M_ENABLE I/O

47 M_SCLK I/O

48 M_SDA I/O

49 M_WAKEUP I/O

50 PDPGO(PM_ON) I/O

OSD DATA

OSD CLK

GND

CNVSS(FLASH)

TRAP-MAIN

FUNCTION

Head Phone Volume

Memory Protect

AGC Voltage(F/E)

FC DATA

FC CLOCK

FC DATA

SYNC-SW

RESET

OSC-OUT

GND

OSC-IN

5V PULL UP

IR Signal

TA1370(LA7213), COMPONENT2

TA1370(LA7213), COMPONENT(Main)/ DSUB COMPONENT

CVBS for SYNC Detection(Sub Picture)

CVBS for SYNC Detection(Main Picture)

L䋺LED ON(Power Save)

TA1370(LA7213), COMPONENT2

PDP/42WVGA/LCD detection

TA1370(LA7213), COMPONENT1(Main), D-SUB

RESERVE(LVDS Power Down mode(PANEL))

DTT

DATA(RS-232C)

DTT

GND

CLOCK(FRASH MEMORY Writing)

BUSY(FRASH MEMORY Writing)

I2C-BUS Contorol DATA

Ether Net

I2C-BUS Contorol CLOCK

Media Enable

Media Clock

Media Data

Media Wakeup

PDP PALEL Contorol

PANEL MODULE Condition(L:Normal,H:Error)

32LD7200 (PW2L)

No. PIN name I/O FUNCTION

51 CPUGO(PM_CPU) I/O

52 EPM (FLASH) I/O

53 VIDEO.DET_1 I/O

54 SCL1 I/O

55 SDA1 I/O

56 HDMI-RESET I/O

57 HDMI-HPD_RESET I/O

58 VIDEO.DET_2 I/O

59 VIDEO.DET_3 I/O

60 TUNER.DET_1 I/O

61 CE (FLASH) I/O

62 STAND.CIR_DET I/O

63 SW_L_OUT I/O

64 SW_R_OUT I/O

65 M_SW I/O

66 INITIALIZE I/O

67 D.RESET(DARST) I/O

68 DVI-PD I/O

69 SCDT I/O

70 HS-DJTR I/O

71 DVI-SW I/O

72 CUR_PRTCT I/O

73 SPRLY I/O

74 MUTE I/O

75 ASEL1 I/O AUDIO Signal SW

76 ASEL2 I/O AUDIO Signal SW

77 SDA2 I/O

78 SCL2 I/O

79 D-SUB COMP_SYNC.SW I/O

80 BM_SW I/O

81 RGB_BLK_2 I/O NC

82 RGB_BLK_3 I/O NC

83 AUD RST I/O

84 PDP_WVGA_LCD_SW_1 I/O

85 +5.0V I

86 RGB1_DET I/O NC

87 GND I

88 WSS_1I/ONC

89 WSS_2 I/O NC

90 WSS_3 I/O NC

91 TV.AFC(S) I/O AFC Voltage(Sub TUNER)

92 TV.AFC(M) I/O

93 FE_AGC_I(M) I/O AGC Voltage(Main TUNER)

94 FE_AGC_I(S) I/O

95 HP_DETECT I/O

96 HDMI_DET I/O

97 INT_HDMI I/O

98 NC I/O NC

99 COMP_SW I/O

100 DEMP_OUT I/O

PDP PALEL Contorol

FRASH MEMORY Writing

Detecting VIDEO PWB

I2C䋨to PWB TUNER side䋩FE/MSP3455or MSP3415G/SAA5361/TB1274(Sub)/M306V7/M62320P

HDMI-Reset

Hot Plug Detect Reset

Detecting VIDEO PWB

Detecting TUNER PWB

FRASH MEMORY Writing

Detecting SWIVEL PWB

SWIVEL(L-output)

SWIVEL(R-output)

Discriminate terminal of bridge media circuit connecting.

Initializing EEPROM

RESET(DVI)

DVI Contorol

SP ON/OFF Relay Control

MUTE

GND

I2C(NJW1163,AD7414,TA1370)

SYNC-SW

PDP/42WVGA/LCD detection

RESET for LIPSYNC IC

BM switch

AFC Voltage(Main TUNER)

HEAD PHONE DETECT

HDMI 5V DET

AFC Voltage(Sub TUNER)

INT(HDMI)

Component SW Main 㹤DSUB

Detecting Power-SWIVEL

de-emphasis control output for HDMI

32LD7200 (PW2L)

No. PIN name I/O FUNCTION

101 CONTROL I/O

102 SCL0 I/O

103 SDA0 I/O

104 SCL3(EEPROM) I/O

105 SDA3(EEPROM) I/O

106 HDMI_CIR_DET I/O

107 EXT_RESET I/O

108 OSD_CS I/O

109 FC_ENABLE I/O

110 NC I/O

111 NC I/O

112 IRQ_DTT I/O

113 DTT_POWER I/O

114 DISPEN I/O

115 HDMI_A_SW I/O

116 SCL5 I/O

117 SDA5 I/O

118 FUNC_1 I/O

119 FUNC_2 I/O

120NC I/O NC

121 AD_KEY3 I/O

122 AD_KEY2 I/O

123 AD_KEY1 I/O

124 TV.POWER I/O

125 DIP.DET I/O

126 POWER_SAVE I/O

127 GND I

128 I/O

Function 1

Function 2

LCD PANEL

I2C-BUS Contorol CLOCK

I2C-BUS Contorol DATA

I2C-BUS Contorol CLOCK

I2C-BUS Contorol DATA

Detecting HDMI circuit connection

OSD CS

FC ENABLE

EXTERNAL RESET

FAN ALARM

AD KEY1(INPUT)

POWRE ON/OFF(H:ON䇮L:STANDBY)

DIP DET

HDMI AUDIO SW

GND

DTT IRQ

DTT POWER

DISPEN

I2C-BUS Contorol CLOCK

I2C-BUS Contorol DATA

AD KEY3

AD KEY2

FAN_ALARM

POWER ON/OFF(L䋺ON(STANDBY䍃POWER SAVE), H䋺OFF)

32LD7200 (PW2L)

Block diagram

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