Hitachi CML170SXWPLUS Schematic

SERVICE MANUAL
MANUEL D'ENTRETIEN
WARTUNGSHANDBUCH

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety
Precautions” and “Product Safety Notices” in this service manual.

No. 0418

CML170SXWBPlus

Data contained within this Service
manual is subject to alteration for
improvement.

ATTENTION:

Avant d’effectuer l’entretien du châassis, le technicien doit lire les «Précautions de sécurité»
et les «Notices de sécurité du produit» présentés dans le présent manuel.

VORSICHT:

Vor Öffnen des Gehäuses hat der Service-Ingenieur die „Sicherheitshinweise“ und „Hinweise
zur Produktsicherheit“ in diesem Wartungshandbuch zu lesen.

Les données fournies dans le présent
manuel d’entretien peuvent faire l’objet
de modifications en vue de perfectionner
le produit.

Die in diesem Wartungshandbuch
enthaltenen Spezifikationen können sich
zwecks Verbesserungen ändern.

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LCD Colour Monitor

December 2001

1. ELECTRICAL REQUIREMENTS ...............................................1

A. LCD Panel Specification.................................................................................1

B. Controls..........................................................................................................2

C. Power Management.......................................................................................2

D. Display Modes for Inspections........................................................................3

E. Dot Defects & Audio Specification..................................................................4

2. MAIN / DISPLAY CONTROL BOARD - VL-705 .........................5

A. Description.....................................................................................................5

B. Features .........................................................................................................5

C. Block Diagram (Control Circuit)......................................................................5

D. Connector Locations......................................................................................6

E. Connector Type..............................................................................................6

F. Connector Pin Assignment.............................................................................6

3. CONTROL PANEL AND AUDIO CONTROL

(KEY BOARD) - VK-517......8

A. Description.....................................................................................................8

B. Connector and Switch Locations....................................................................8

C. Connector Type .............................................................................................9

D. Connector Pin Assignment.............................................................................9

4. POWER AND AUDIO BOARD - VM-517....................................11

A. Major Specification.........................................................................................11

B. Description.....................................................................................................11

C. Electrical Characteristics................................................................................11

D. Connector Location........................................................................................11

E. Connector Type..............................................................................................12

F. Connector Pin Assignment.............................................................................12

5. INVERTER BOARD - AMBIT T51I036.00 ..................................13

A. Description.....................................................................................................13

B. Electrical Characteristics................................................................................13

C. Connector Locations......................................................................................16

D. Connector Pin Assignment.............................................................................16

6. AC ADAPTER (LSE9901B1260) ................................................17

A. Specification Review ..................................................................................... 17

7. CIRCUIT DESCRIPTION ............................................................17

A. Display Controller...........................................................................................17

B. Plug and Play Circuit......................................................................................17

C. System Clock.................................................................................................17

D. Power Regulator............................................................................................17

8. INTRODUCTION.........................................................................18

A. Front Panel Controls and LED........................................................................18

B. Rear Panel Connectors..................................................................................19

9. TROUBLESHOOTING................................................................20

A. Main Procedure..............................................................................................20

B. Power Troubleshooting ..................................................................................21

C. Backlight Troubleshooting..............................................................................22

D. Performance Troubleshooting........................................................................23

E. Function Troubleshooting...............................................................................24

APPENDIX A: REPLACEMENT PARTS LISTS ............................25

1. ELECTRICAL REQUIREMENTS

A. LCD Panel Specification

Display: 17 inch (17” viewable image size): active matrix: thin film transistor

(TFT): liquid crystal display (LCD): 0.264 mm dot pitch: RGB
Vertical stripe 200 cd/m
ratio, Min.

2

white luminance, typical: 200:1 contrast

Compatibility:

Synchronisation

Frequencies:

Resolution:

Active Display Area:

Viewing Angles:

640 x 350: VGA-350

720 x 400: VGA text

640 x 400: VGA-GRAPH

640 x 480: VGA, 60Hz to 75 Hz vertical refresh rate

800 x 600: 56Hz to 75 Hz vertical refresh rate

1,024 x 768 non-interlaced: 60Hz to 75 Hz vertical refresh rate

1,280 x 1,024 non-interlaced: 60~75Hz vertical refresh rate

Horizontal: 24~80KHz

Vertical: 56~75Hz

Pixel Frequency: 25~135 MHz

Horizontal: 1,280 dots

Vertical: 1,024 lines

Horizontal: 337.92 mm

Vertical: 270.34 mm

Up 40º, Down 80º (typical)

Display Colours:

Power Supply:

Power
Consumption:

Environmental:

Left 60º, Right 80º (typical)

CR ≥ 10

16,777,216 (with FRC)

AC 100 to 240V worldwide input, 50/60Hz

Typical: 50W on mode +10 / -25%

Operating temperature: 0~50ºC

Storage temperature: -20~65ºC

Relative Humidity: 20~80%

1

B. CONTROLS

B-1 Control Panel (Monitor Front Panel)

1. Power LED.

2. Adjust decrease.

3. Adjust increase.

4. Function select anti-clockwise.

5. Function select clockwise.

6. Power ON/OFF switch, push to ON and push to OFF. (Toggle switch)

7. Ear-phone jack.

8. Volume Control.

C. Power Management

C-1 Power Management

1. Meets VESA DPMS Proposal

2. Power Consumption

Meets VESA DPMS Proposal

On-mode 54 W

Stand-by 5 W

Suspend 5 W

Off-mode 5 W

DC power off 5 W

Disconnection 5 W

 Power saving states are measured with speakers attached but not working.
 The recovery time from stand-by/suspend/off-mode to on-mode is 3 seconds maximum.

Green

max

Yellow

max

Yellow

max

Yellow

max

Dark

max

max

Dark (DC power off)
Yellow (DC power on)

C-2 Power Consumption

Meets VESA DPMS Proposal

On-mode 54 W

Stand-by 5 W

Suspend 5 W

Off-mode 5 W

DC power off 5 W

Disconnection 5 W

1. Measured from AC input end of AC power adapter.

2. Power saving states are measured with speakers attached but not worked.

max

max

max

max

max

max

2

D. Display Modes for Inspections

D-1 Supported Timing

TIMING

640x350 31.469
VGA-350 70.087
640x400 31.469
VGA-GRAPH 70.087
640x400 31.5
NEC PC9821 70.15
640x480 31.469
VGA-480 59.94
640x480 35
APPLE MAC-480 66.67
640x480 37.861
VESA-480-72Hz 72.809
640x480 37.5
VESA-480-75Hz 75
720x400 31.469
VGA-400-TEXT 70.087
832x624 49.725
APPLE MAC-800 74.55
800x600 35.156
SVGA 56.25
800x600 37.879
VESA-600-60Hz 60.317
800x600 48.077
VESA-600-72Hz 72.188
800x600 46.875
VESA-600-75Hz 75
1024x768 48.363
XGA 60.004 - 806 768 6 3 29
1024x768 53.964
COMPAQ-XGA 66.132
1024x768 56.476
VESA-768-70Hz 70.069
1024x768 60.023
VESA-768-75Hz 75.029
1024x768 60.24
APPLE MAC-768 75.02
1280x1024 64
VESA-1024-60Hz 60
1280x1024 80
VESA-1024-75Hz 75

FH (KHZ) SYNC TOTAL ACTIVE SYNC FRONT BACK PIXEL

FV (HZ) POLARITY (DOT/LINE) (DOT/LINE)

+

-

­+

-

-

-

-

-

-

-

-

-

-

­+

-

­+
+
+
+
+
+
+
+

-

+
+

-

­+
+

-

­+
+
+
+

800 640 96 16 48 25.175
449 350 2 37 60
800 640 96 16 48 25.175
449 400 2 12 35
800 640 64 16 80 25.197
449 400 2 13 34
800 640 96 16 48 25.175
525 480 2 10 33
832 640 40 24 128 31.5
520 480 3 9 28
832 640 40 16 120 31.5
520 480 3 1 20
840 640 64 16 120 31.5
500 480 3 1 16
900 720 108 18 54 28.322
449 400 2 12 35

1152 832 64 32 224 57.2832

667 624 3 1 39

1024 800 72 24 128 36

625 600 2 1 22

1056 800 128 40 88 40

628 600 4 1 23

1040 800 120 56 64 50

666 600 6 37 23

1056 800 80 16 160 49.5

625 600 3 1 21

1344 1024 136 24 160 65

1328 1024 176 16 112 71.664

816 768 4 8 36

1328 1024 136 24 144 75

806 768 6 3 29

1312 1024 96 16 176 78.75

800 768 3 1 28

1328 1024 96 32 176 80

803 768 3 3 29
1688 1280 112 48 248 108
1066 1024 3 1 38
1688 1280 144 16 248 135
1066 1024 3 1 38

WIDTH

(DOT/LINE)

PORCH

(DOT/LINE)

PORCH

(DOT/LINE)

FOREQ.

(MHZ)

If the input timing is not a supported timing listed above but within the supported frequency range
(Horizontal: 80KHz, Vertical: 85Hz), this monitor will select a closest mode instead. However, the
display quality may not be optimised.

3

E. Dot Defects & Audio Specification

E-1 Dot Defects on LCD Panel

Visual
Defect

Electrical
Defect

Foreign Material

Bubble

Scratch

Bright Line

Dark Line

Bright Dot None
Double Bright Dot
Three Bright Dots None
Dark Dot
Double Dark Dot
Three Dark Dots
Distance of B/D to B/D
Distance of D/D to D/D

0.1=<D=<1.0

D=<1.0
N=<6

0.01=<W=<0.1

0.3=<L=<7
N=<4

0.05=<W=<0.1

0.3=<L=<7

N=<4

N=<2

N=<10
N=<3
N=<1
S>=10mm
S>=5mm

Note:

W : Width (mm)

L : Length (mm)
D : Diameter (mm)
N : Number (pcs)

B/D: Bright Dot
D/D: Dark Dot

E-2 Audio Specifications

Conditions 1KHz, volume max, Load 8W speakers x2
Audio Input 500mV
Audio Output 2x 0.5W
Frequency Response 50Hz to 20KHz ±3dB
S/N Ratio -70dB max
Cross Talk -40dB max
Distortion 1% max

rms

max

4

2. MAIN / DISPLAY CONTROL BOARD - VL-706

A. Description

The VL-706 display control board is design to directly convert analog RGB signals from a
standard VGA display card to optimum LCD timing signals so as to construct a high display
quality LCD monitor.

B. Features

•

On-board embedded micro-processor to detect display timings and control user
functions.

• Uses Pixelworks design to generate optimum LCD timings.

• Uses EEPROM to memorise every adjusted parameter.

• Supports up to 22 display modes from VGA to SXGA.

• Offers full screen expansion function on non-SXGA mode (automatic).

• Flexible colour temperature selection function including 9300º, 6500º and user mode.

• Supports OSD functions.

• Supports VESA DPMS function.

• Supports DDC1/2B functions.

• Supports 5 languages for OSD description.

• The longest time for mode change is 3 seconds.

C. Block Diagram

5

D. Connector Locations

E. Connector Type

Location Type Maker Number of Pins

CN2 1211-15 E&T 15

CN1 74320-1004 FEMALE 30

CN8 96113-1203 E&T 12

CN3 96113-0513 E&T 5

CN7 96113-1003 E&T 10

CN4 96118-0413 E&T 4

CN5 98210-3011 E&T 30

F. Connector Pin Assignment

F-1 CN2

Pin No. Signal Comment

1 R-Video Red Video Input.
2 G-Video Green Video Input.
3 B-Video Blue Video Input.
4 NC
5 PCDETECT PCDETECT Input.
6 Ground Ground.
7 Ground Ground.
8 Ground Ground
9 5VCC DDC Power Input.
10 Ground Ground.
11 NC
12 SDA DDC 1/2B
13 HS Horizontal Sync Input.
14 VS Vertical Sync Input.

15 SCL DDC 2B

6

F-2 CN5

Terminal No. Symbol Function

28,29,30 VDD 5V POWER SUPPLY

1 TXE0- LVDS EVEN OUTPUT DATA PAIRS

2 TXE0+ LVDS EVEN OUTPUT DATA PAIRS

3 TXE1- LVDS EVEN OUTPUT DATA PAIRS

4 TXE1+ LVDS EVEN OUTPUT DATA PAIRS

5 TXE2- LVDS EVEN OUTPUT DATA PAIRS

6 TXE2+ LVDS EVEN OUTPUT DATA PAIRS

8 TXECLK- LVDS EVEN OUTPUT DATA PAIRS

9 TXECLK+ LVDS EVEN OUTPUT DATA PAIRS

10 TXE3- LVDS EVEN OUTPUT DATA PAIRS

11 TXE3+ LVDS EVEN OUTPUT DATA PAIRS

12 TXO0- LVDS ODD OUTPUT DATA PAIRS

13 TXO0+ LVDS ODD OUTPUT DATA PAIRS

15 TXO1- LVDS ODD OUTPUT DATA PAIRS

16 TXO1+ LVDS ODD OUTPUT DATA PAIRS

18 TXO2- LVDS ODD OUTPUT DATA PAIRS

19 TXO2+ LVDS ODD OUTPUT DATA PAIRS

20 TXOCLK- LVDS ODD OUTPUT DATA PAIRS

21 TXOCLK+ LVDS ODD OUTPUT DATA PAIRS

22 TXO3- LVDS ODD OUTPUT DATA PAIRS

23 TXO3+ LVDS ODD OUTPUT DATA PAIRS

7,14,17,24 GND Ground

25,26,27 GND Ground

F-3 CN1

Pin Signal Assignment Pin Signal Assignment Pin Signal Assignment

1 TMDS Data2- 9 TMDS Data1- 17 TMDS Data0­2 TMDS Data2+ 10 TMDS Data1+ 18 TMDS Data0+
3 TMDS Data2/4 Shield 11 TMDS Data1/3 Shield 19 TMDS Data0/5 Shield
4 TMDS Data4- 12 TMDS Data3- 20 TMDS Data5­5 TMDS Data4+ 13 TMDS Data3+ 21 TMDS Data5+
6 DDC Clock 14 +5V Power 22 TMDS Clock Shield
7 DDC Data 15 PC DETECT 23 TMDS Clock+
8 Not Connect 16 Hot Plug Detect 24 TMDS Clock-

F-4 CN8

Pin No. Signal Comment

1,2,3 12 VCC Inverter Power Output.

4 BLON Bright Light ON/OFF.

5,6,10,11,12 GND GND

7,8 5 VCC Inverter Power Output.

9 BRIGHT Brightness Adjustment.

7

F-5 CN4

Pin No. Signal Comment

1 12 VCC 12 VCC Power Input

2 5 VCC 5V Power Input

3 GND GND

4 GND GND

F-6 CN7

Pin No. Signal Comment

1 MUTE Volume ON/OFF control

2 LED-Y Power saving mode

3 LED-G Monitor is ON

4 GND GND

5 KEY-UP Function select anti-clockwise key

6 KEY-DOWN Function select anti-clockwise key

7 KEY-R Adjust up key

8 KEY-L Adjust down key

9 KEY-POWER Power ON/OFF key

10 GND GND

3. CONTROL PANEL AND AUDIO CONTROL (KEY BOARD) ­VK-517

A. Description

The VK-517 is designed to offer a user interfaced control panel that passes and receives signals
to and from VL-706 display control board. Also there is a stereo audio amplifier to drive a pair
of speakers. When in power saving mode, the audio circuit can be turned off by the control
signal from VL-706 board.

B. Connector and Swi t ch Locati ons

8

C. Connector Type

Location Type Maker Number of Pins

J1 96113-1113 E&T 11

J2 SCJ-0348-C SC 9

J3 87502-0200 ACES 2

J4 87502-0200 ACES 2

J5 96113-1013 E&T 10

D. Connector Pin Assignment

D-1 J1

Pin No. Signal Comment

1 VOL Volume ON/OFF control

2 GND GND

3 RIN1 Audio volume adjust line INR

4 LIN1 Audio volume adjust line INL

5 RIN2 Audio volume adjust line OUTR

6 LIN2 Audio volume adjust line OUTL

7 GND GND

8 R-EAR EAR phone out R

9 L-EAR EAR phone out L

10 ROUT Speaker out R

11 LOUT Speaker out L

D-2 J5

Pin No. Signal Comment

1 MUTE Volume ON/OFF control

2 LED-Y Power saving mode.

3 LED-G Monitor on mode.

4,10 GND GND

5 KEY-UP Function select up to VL-706

6 KEY-DOWN Function select down to VL-706

7 KEY-R Function select right to VL-706

8 KEY-L Function select left to VL-706

9 KEY-PWR Power ON/OFF signal to VL-706

9

D-3 J3 and J4

Pin No. Signal Comment

1 GND GND

2 OUTL (OUTR) Speaker Out

D-4 J2

Pin No. Signal I/O Comment

1 GND Ground

2 LI 2 Earphone out L

3 RI 2 Earphone out R

4 LI 1 Earphone out L

5 LO Speaker out L

6 NC Not connected

7 RI 1 Earphone out R

8 RO Speaker out R

D-5 Switch Definition

Location Definition

S1 Power ON/OFF

S2 Function select by clockwise direction

S3 Function select by anti-clockwise direction

S4 Adjust up

S5 Adjust down

D-6 LED Definition

Location Definition

D1 Green for ON-mode; Dark for DC power off; Yellow for stand-by; suspend; off-mode.

D-7 Variable Resistor

VR1: Volume control, clockwise for increasing; anti-clockwise for decreasing

10

D-8 Electrical Characteristics (T

amb

=25

°°°°

C)

Audio amplifier (Use Panasonic VP-7723A Audio Analyzer).

Item Audio Input Freq. Spec. Comment

Min. Typ. Max.

Input Voltage (V) 11.4 12 12.6

Input Current (mA) 500 800

Audio Voltage Gain 500mV

Frequency Response 100mV

Signal to Noise Ratio 500mV

Crosstalk 100mV

Distortion 500mV

Output Wattage 500mV

Volume Control Analog

1KHz 14dB

rms

50Hz~20KHz -3dB +3dB

rms

1KHz -70dB

rms

1KHz -60dB

rms

1KHz 1%

rms

1KHz 0.5W

rms

4. POWER AND A UDIO BOARD - VM-517

A. Major Specification

Input voltage: 12V ±5% from adapter (LSE 9901B1260)

Volume Max. Load 8Ω

Volume Max. Load 8Ω

Volume Max. Load 8Ω

Volume Max. Load 8Ω

Volume Max. Load 8Ω

Volume Max. Load 8Ω

Input current: 5A max.

Output:

ITEM Output Voltage Max Load. Min Load Tolerance Ripple & Noise (max)

VCC +5.1V 1.9A 0.19A ±5% 150mV

p-p

B. Description

The VM-517 is designed to supply the power to the VL-706 display control board. Under the
control of VL-706, it can run into power saving mode so as to save the power of the whole
monitor.

C. Efficiency

80% minimum at Maximum Load.

D. Connector Locations

11

E. Connector Type

Location Type Maker Number of Pins

J801 DC-IN SC 2

J3 SCJ-0345-1-X-S SC 3

J2 96113-1103 E&T 11

J802 B4B-XH-A JST 4

F. Connector Pin Assignment

F-1 J801 DC 12V Input

Pin No. Signal Comment

Pin 1 +12V From adapter output cable

Pin 2 GND From adapter output cable

F-2 J802 FOR I/F Circuit

Pin No. Signal Comment

Pin 1 +12V From adapter +12V Power

Pin 2 +5.1V Supply for I/F Circuit

Pin 3, 4 GND GND

F-3 J3 FOR Audio input

Pin No. Signal Comment

Pin 1 GND GND

Pin 2 Audio IN (1) From Audio output (1)

Pin 3 Audio IN (2) From Audio output (2)

F-4 J2 TO Speaker Circuit

Pin No. Signal Comment

Pin 1 VOL Volume ON/OFF control

Pin 2 GND GND

Pin 3 RIN1 Audio volume adjust line INR

Pin 4 LIN1 Audio volume adjust line INL

Pin 5 RIN2 Audio volume adjust line OUTR

Pin 6 LIN2 Audio volume adjust line OUTL

Pin 7 GND GND

12

Pin 8 R-EAR EAR phone out R

Pin 9 L-EAR EAR phone out L

Pin 10 ROUT Speaker out R

Pin 11 LOUT Speaker out L

5. INVERTER BOARD - AMBIT T51I036.00

A. Description

The T51I036.00 Inverter board is designed for lighting up the back-lights of LCD module.

B. Electrical Characteristics

B-1 FOR UNIPAC PANEL (UM170E01)

MIN. TYP. MAX. COMMENT

INPUT VOLTAGE 11.4V 12.0V 12.6V 12V ±5%

INPUT CURRENT -------- 2.1A _ Vin=12V, Vbrite=0V

Normal BACKLIGHT
VOLTAGE

LAMP CURRENT

DRIVING
FREQUENCY

EFFICIENCY -------- 78% --------

PWM dimming
frequency

Vin ON/OFF sequence -------- 0.5S --------

OLP TIME -------- 1S _

BRIGHTNESS RANGE 20% -------- 100%

Brightness control 0V _ 4V 0V, brightness max.

Brightness _ 250 cd/m

Strike voltage at 0°C _ _ 1250 V

Strike voltage at 25°C _ _ 950 V

-------- 710 V

--------. 12mA

45KHz 52KHz 60KHz

120Hz 140Hz 160Hz

--------

rms

--------

rms

2

_

rms

rms

Total two lamps for

Unipac

Vin = 12V, max

brightness

Open lamp protection

time

Operating life time 50,000 hrs _ _ (note)

Note:

Life-time (hr) can be defined as the time in which it continues to operate under the condition:

Ta=25 ±2°C, IL =12 mA

1. When the brightness becomes 50%

2. When the startup voltage (Vs) at 0°C becomes higher than the maximal value of Vs specified above.

until one of the following event occurs:

rms

13

B-2 FOR SAMSUNG PANEL (LT170E2-131)

MIN. TYP. MAX. COMMENT

INPUT VOLTAGE 11.4V 12.0V 12.6V 12V ±5%

INPUT CURRENT -------- 2.2A -------- Vin=12V, Vbrite=4V

Normal BACKLIGHT
VOLTAGE

LAMP CURRENT
(every lamp)

DRIVING
FREQUENCY

EFFICIENCY -------- 78% --------

PWM dimming
frequency

-------- 690V

2mA

6.5mA

rms

--------

rms

7mA

rms

Each CCFL

rms

30KHz 50KHz 80KHz

Vin = 12V, max

brightness

120Hz 140Hz 160Hz

Vin ON/OFF sequence -------- 0.5S --------

OLP TIME -------- 1S --------

Open lamp protection

time

BRIGHTNESS RANGE 20% -------- 100%

Brightness control 0V _ 3.75V

Brightness 170 cd/m2 200 cd/m

2

_

Strike voltage at 0°C _ _ 1420V

Strike voltage at 25°C _ _ 1100V

rms

rms

3.75V, brightness
max.

Operating life time 20,000 hrs _ _ (note)

Note:

Life-time (hr) can be defined as the time in which it continues to operate under the condition:

Ta=25±2°C, IL =6.5mA

until one of the following event occurs:

rms

1.When the brightness becomes 50%

2.When the startup voltage (Vs) at 0°C becomes higher than the maximal value of Vs specified above.

14

B-3 FOR ACER PANEL (L170E3-1)

MIN. TYP. MAX. COMMENT

INPUT VOLTAGE 11.4V 12.0V 12.6V 12V ±5%
INPUT CURRENT -------- 1.7A _ Vin=12V, Vbrite=3.75V

Normal BACKLIGHT
VOLTAGE

LAMP CURRENT
(every lamp)

DRIVING
FREQUENCY

-------- 720V

6.1mA

3mA

rms

40KHz 50KHz 60KHz

EFFICIENCY -------- 75% -------­PWM dimming

frequency

150Hz 170Hz 190Hz

--------

rms

6.6mA

rms

Each CCFL

rms

Vin = 12V, max

brightness

Vin ON/OFF sequence -------- 0.5S --------

OLP TIME -------- 1S -------­BRIGHTNESS

RANGE

20% -------- 100%

Open lamp protection

time

Brightness control 0V _ 3.75 V 3.75V, brightness max.
Brightness 200 cd/m2 250 cd/m
Strike voltage at 0°C _ _
Strike voltage at 25°C _ _

2

_

rms

rms

1700V
1200V

Operating life time 50,000 hrs _ _ (note)

Note:

Life-time (hr) can be defined as the time in which it continues to operate under the condition:

Ta=25±2°C, IL =6mA ±0.5mA

until one of the following event occurs:

rms

1.When the brightness becomes 50%

2.When the startup voltage (Vs) at 0°C becomes higher than the maximal value of Vs specified above.

15

C. Connector Locations

D. Connector Pin Assignment

D-1 CN1 (ACES, 85205-1200 12P)

Pin No. Signal Comment

1,2,3 BP+ +12V

5,6,10,11,12 GND GND

4 BLT_ON Back-light ON/OFF control, high active (5V)

7 +5VS +5VS

9 BRITE BRITE Brightness (0-5V) control from I/F
0V for maximum brightness

8 NC NC

D-2 CN2 and CN3 (JST SM04(4.0)B-BHS-14P)

Pin No. Signal Comment

1 HV High voltage for lamp

2 HV High voltage for lamp

3 NC NC

4 LV Low voltage (common)

16

6. AC ADAPTER (LSL9901B12320)

A-1 Specification Review

• Input voltage

Single phase, 50/60HZ, 100VAC to 240VAC ±10%

• Input current

1.5A (max) at 90VAC input and full load 0.75A (max) at 264 VAC input and full
load.

• Inrush current @ cold start

30A (0-peak) @ 110Vac, 50A (0-peak) @ 220Vac

• Output

Tolerance Output Current

Output Volt - MIN MAX

+12Vdc ±5% 0A 5A 11.4~12.6Vdc

• Total output power: 60Watt max.

• Efficiency: 80% min. @115V/230VAC maximum load.

• Dimensions: 110 (L) x 63 (W) x 31 (H)

7. CIRCUIT DESCRPTION

A. Display Controller

U8 is image processor. The functions of the CHIP support as below:

1. High quality image scalar

2. On-chip 16 bit Microprocessor

3. On-screen display

4. Automatic image optimiser

Volt Tolerance

B. Pl ug and Play Ci rcuit

Plug and play allows the serial communication of host PC and peripherals offering minimal
configurations to end-users. This monitor supports DDC2B communication protocol.

C. System Clock

The U11 (130MHz) & U13 (104 MHz) supports the U8 reference clock.

D. Power Regulator

1. The U15, U18 (APL1085) & U17 (APL5883) are linear regulators that converts input
voltage from 5V to 3.3V.

2. The U16 (APL1117) is linear regulator that converts input voltage from 5V to 2.5V.

17

8. INTRODUCTION

A. Front Panel Control and LED

Front Panel Controls

Item Control Function

1 Power Switch Turns the monitor on and off.

2 Power LED 1. Green indicates monitor is on.

2. Dark indicates DC power is off.

3. Yellow indicates stand-by, suspend or off-mode.

3

Function Button Launches OSD function menu

4

5 Plus Button Selects and adjusts the functions

6 Minus Button Selects and adjusts the functions

18

B. Rear Panel connector Input Signals

Rear Panel Cable and Connector

Item Cable / Connector Function

1

2

3

Signal Connector Connects the video cable

Power Connector

Audio Connector Connects the audio cable

Connects the adapter cable

19

9. TROUBLESHOOTING

A. Main Procedure

20

A-1 Power Circuit Troubleshooting

21

A-2 Backlight Troubleshooting

22

A-3 Performance Troubleshooting

23

A-4 Function Troubleshooting

24

THE UPDATED PARTS LIST

FOR THIS MODEL IS

AVAILABLE ON ESTA

Audio B oard
connect or

J2

4 5

J1

11
10

LOUT
R OU T

9

L _E AR

8

R _EAR

7

L IN_ 2

6
5
4
3
2
1

2

1

1

E

3

L I1 L O

2

L I2

7

R I1

3

R I2

S CJ-0348-C

NC
R O

GND

6
8
1

J3

1
2

ACE S _87502_0200
S T R AIGHT /2.5

J4

1
2

ACE S _87502_0200
S T R AIGHT /2.5

R

M a i n B o a r
c o n n e c t o

E & T _ 9 6 1 1 3 _ 1 1 1

J

M U T

L E D _
L E D _
G N
K E Y _ U
K E Y _ D O W
K E Y _
K E Y _
K E Y _ P W
G N

1

E & T _ 9 6 1 1 3 _ 1 0 1

R I N _
L I N _
R I N _

M U T

1

'

5

d

1

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2
3
4
5
6
7
8
9
0

S

P T - 0 0 2 - B

S

P T - 0 0 2 - B

E

Y
G

D

P

R
L

D

3

N

R

S

P T - 0 0 2 - B

S

S

P T - 0 0 2 - B

V

321

1

S

P T - 0 0 2 - B

S

3 3 ' 2 ' 2

1

2

2

2

Y G 2 0 9 3 Y E L / G R

1

3

2

6

2

4

2

5

2

7

2

N

P T - 0 0 2 - B

P T - 0 0 2 - B

No. 0418

VK 517 Key Board

HITACHI

No. 0418

VL-706 VGA Input

HITACHI

No. 0418

VL-706 ADC

HITACHI

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VL-706 TMDS

HITACHI

No. 0418

VL-706 Scaler and MCU

HITACHI

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HITACHI

No. 0418

VL-706 MSIC

HITACHI

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VL-706 Power

HITACHI

No. 0418

VL-706 LVDS

HITACHI

No. 0418

VL-706 Keyboard

HITACHI

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VM-517 DC-DC

HITACHI

No. 0418

VM-517 Audio Amp

HITACHI

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International Sales Division

THE HITACHI ATAGO BUILDING,

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Minato – Ku, Tokyo 105-8430, Japan.

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