Sanyo VMC-8615FP Bedienungsanleitung

FILE NO.

REFERENCE No.SM5310563

L8MAG/XE,UK,AU,US

NOTE: 1. Parts order must contain model number, part number, and description.

2. Substitute parts may be supplied as the service parts.

3. N.S.P. : Not available as service parts.

Design and specifications are subject to change without notice.

SERVICE MANUAL

Color Video Monitor

CONTENTS

SPECIFICATIONS .................................................................... 3

1. OPERATING INSTRUCTIONS ............................................. 4

2. DISASSEMBLY ..................................................................... 6

3. SERVICE ADJUSTMENTS ................................................... 7

4. PARTS LIST ....................................................................... 11

CIRCUIT DIAGRAMS & PRINTED WIRING BOARDS...........C1

VMC-8615FP

(Product Code : 114 952 10)

(U.K.)

VMC-8615FP

(Product Code : 114 952 11)

(Australia)

VMC-8615FP

(Product Code : 114 952 09)

(Europe)

VMC-8614F

(Product Code : 114 952 12)

(U.S.A., Cnada)

– 2 –

SAFETY PRECAUTIONS

WARNING:

Service should not be attempted by anyone unfamiliar with the necessary precautions for this recording or playback

equipment. The following precautions are necessary during servicing:

1. Many electrical and mechanical parts in this recorder have

special safety-related characteristics for providing protec-

tion against shock, fire and other hazards. These charac-

teristics often go unnoticed in a visual inspection, and the

protection afforded by them cannot necessarily be ob-

tained by using replacement components with higher rat-

ings (voltage, wattage, etc.).

2. Replacement parts having special safety-related charac-

teristics are identified in this manual, and in the schematic

diagrams, by the symbol ! . These components have

values that are of special significance to product safety.

Should any component (identified by the symbol ) need

to be replaced, use only the part designated in the parts

List. Do not deviate from the specified resistance, wattage,

and voltage ratings.

3. Before returning the set to the customer, always perform an

AC leakage current check on the exposed metallic parts of

the cabinet, such as terminals, screwheads, metal over-

lays, etc. to be sure that the set is safe to operate without

the danger of electrical shock, Plug the AC line cord directly

into a 120 V AC outlet. (Do not use a line isolation trans-

former during this check.) Use an AC voltmeter with a

sensitivity of 5000 ohms per volt (or more) as follows:

Connect a 1500 ohms, 10 watt resistor, paralleled by a 0.15

mfd, 150 VAC capacitor, between a known good earth

ground (water pipe, conduit, etc.) and the exposed metallic

parts, one at a time. Measure the AC voltage across the

1500 ohms resistor and 0.15 mfd capacitor combination.

Reverse the AC plug at the AC outlet and repeat the AC

voltage measurements for each exposed metallic part. The

measured voltage must not exceed 300 mVrms. This

corresponds to 200 µA AC. Any value exceeding this limit

constitutes a potential shock hazard and must be corrected

immediately.

4. Fuse symbol marks.

For CANADA

UNDERWRITERS LABORATORIES Standard

CAUTION "Risk of fire-replace fuse as marked"

For U.S.A.

Fuse rating is marked at

adjacent fuse.

Video

Monitor

– 3 –

Fig. 1

PAL/NTSC, selected automatically

14 inch (VMC-8614F) , 15 inch (VMC-8615FP)

More than 800 TV lines

Separate Y/C signal, mini-DIN 4-pin connector (1)

Y signal: 1.0 Vp-p, 75 Ωnegative sync

C signal: 0.286 Vp-p, 75 Ωnegative sync

Composite sync signal: 1.0 Vp-p, 75 ΩBNC connector (2)

-6dBs (400 mVrms), RCA pin (3)

Separate Y/C signal, mini-DIN 4-pin connector (1)

Y signal: 1.0 Vp-p, 75 Ωnegative sync

C signal: 0.286 Vp-p, 75 Ωnegative sync, loop-through, automatic termination

settihg

Composite sync signal: 1.0 Vp-p, 75 ΩBNC connector (2), loop-through,

automatic termination settihg

-6dBs (400 mVrms), RCA pin (3), loop-through

1 W

x 1, impedance of 8 Ω

100 to 240 V AC, 50/60 Hz

95 Watts

-10 °C to +45 °C storage temperature

15 % to 90 %

368 x 361 x 376 mm

15kg

SPECIFICATIONS

Color system :

Picture tube :

Resolution :

Input terminals

S-VIDEO signal (VIDEO C) :

VIDEO signal (VIDEO A, B) :

AUDIO signal (AUDEO A, B) :

Outout terminals

S-VIDEO signal (VIDEO C) :

VIDEO signal (VIDEO A, B) :

Audio output :

Speaker :

Power source :

Power consumption :

Ambient operating temperature :

Ambient operating humidity :

Dimension (W x H x D ) :

Weight :

–4 –

Fig. 2

1. Speaker

When the monitor selector button (A, B or Y/C) is

pressed, the speaker lets you hear the sound from

the components which are connected to the termi-

nals at the rear of the monitor. (Use components

which produce audio output.)

2. On-screen display button (OSD)

When this button is pressed, the menu screen

appears on the monitor screen.

3. Cursor ( ) button ( )

When this button is pressed, the cursor moves

down. When it reaches the bottom, it reappears at

the top. In addition, this button is used to make

adjustment values smaller.

4. Cursor ( ) button ( )

When this button is pressed, the cursor moves up.

When it reaches the top, it reappears at the bottom.

In addition, this button is used to make adjustment

values larger.

5. Display selector button (ENTER)

If this button is pressed while a picture is on the

monitor screen, the screen changes to the adjust-

ment screen. If the button is pressed once more, the

picture returns to the previous screen.

6. Underscan/overscan select button (SCAN)

The initial setting is for the normal screen (overscan).

1. OPERATING INSTRUCTIONS

1-1. FRONT PANEL CONTROLS

If the SCAN button is pressed, the screen will be-

come smaller (underscan) than the normal screen.

Change this setting in cases such as when screen

display characters are missihg. If the SCAN button is

pressed once more, the normal screen is displayed

again.

7. Monitor A selector button (A)

When this button is pressed, the audio and video

input changes to the component which is connected

to the A terminals at the rear of the monitor.

8. Monitor B serector button (B)

When this button is pressed, the audio and video

input changes to the component which is connected

to the B terminals at the rear of the monitor.

9. Monitor Y/C selector button (Y/C)

When this button is pressed, the audio and video

input changes to the component which is connected

to the Y/C terminals at the rear of the monitor.

10. Power indicator (POWER)

Lights when the power is on.

11. Power button (POWER)

Press this button to turn the power on and off.

245 6710

SCAN

311

–5 –

23 4

Fig. 4

1-2. REAR PANEL CONTROLS & CONNECTION

1. AC INPUT socket

Connect the AC power cord (supplied) securely to

this socket and to a wall outlet.

2. Rear A terminals (AUDIO/VIDEO A terminals)

When the monitor A selector button at the front of the

monitor is pressed, the audio and video signals from

the component which is connected to these terminals

can be monitored.

3. Rear B terminals (AUDIO/VIDEO B terminals)

When the monitor B selector button at the front of the

monitor is pressed, the audio and video signals from

the component which is connected to these terminals

can be monitored.

4. Rear Y/C terminals (AUDIO/VIDEO Y/C

terminals)

When the monitor Y/C selector button at the front of

the monitor is pressed, the audio and video signals

from the component which is connected to these

terminals can be monitored.

Fig. 3

Y/C (Mini DIN 4 pin) terminal specification

Pin No. Signal

1 GND (Y)

2 GND (C)

OUT

–6 –

Fig. 6

Fig. 5

VIDEO BOARD

MAIN BOARD

FUNCTION BOARD

SIGNAL BOARD

2. DISASSEMBLY

2-1. REMOVAL OF CABINET

2-2. BOARD LOCATION

–7 –

3. SERVICE ADJUSTMENTS

1. Supply power to the set and measuring instruments and allow to warm up for at least 30 minutes.

NOTE

Be sure to use a non-metallic driver for adjusting there VRs. A metallic driver can cause damage by shorting.

Adjustment tool

1. Digital multi meter

2. Pattern generator

3. Color analyzer (luminance Mindlta)

Adjustment mode

Over scan mode

ADJUSTMENT

ITEM

TIMING

PATTERN SETTING VR

LOCATION ADJUSTMENT PROCEDURE

B+ VOLTAGE

ADJUSTMENT

HOLD DOWN

VOLTAGE

SETTING

FOCUS

ADJUSTMENT

PINCUSHION

ADJUSTMAN

HORIZONTAL

PHASE

ADJUSTMENT

HORIZONTAL

SIZE

ADJUSTMENT

(VMC-8614F

only)

HORIZONTAL

SIZE

ADJUSTMENT

(VMC-8615FP

only)

VERTICAL

LINEARY

ADJUSTMENT

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

TEST POINT : D910(-)

DIGITAL VOLT METER

VALUE 47.5 ±0.5 VDC.

TEST POINT : PIN1

DIGITAL VOLT METER

VALUE 8.5 ±0.2 VDC.

Adjusting FBT FOCUS VR to make focus

resolution of reach over 800 TV Lines,

Center and four corners must be clear.

Adjusting VR305 to make the vertical line

of the picture in a beeline.

Adjusting VR401 horizontal phase to

make screen right and left symmetrize.

Adjusting H-size control VR306 to make

signal side of picture of scale is "3"

position.

Adjusting H-size control VR306 to make

signal side of picture of scale is "2"

position.

Adjusting VR302 V-LINEARITY to make

up/down linear be identical.

VR901

VR503

FBT FOCUS

VR305

VR401

VR306

VR302

Tiny Brightness

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

BRIGHT VR ,

CONTRAST VR

to 75%.

SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR to

MAX.

–8 –

ADJUSTMENT

ITEM

TIMING

PATTERN SETTING VR

LOCATION ADJUSTMENT PROCEDURE

VERTICAL

CENTER

ADJUSTMENT

VERTICAL

SIZE

ADJUSTMENT

(VMC-8614F

only)

VERTICAL

SIZE

ADJUSTMENT

(VMC-8615FP

only)

TILT ADJUST-

MENT

WHITE BAL-

ANCE ADJUST-

MENT (VMC-

8614F only)

WHITE BAL-

ANCE ADJUST-

MENT (VMC-

8615FP only)

Adjusting VR303 to make screen up &

down symmetrize.

Adjusting VR301 to signal side of picture

of scali is "3" position.

Adjusting VR301 to signal side of picture

of scali is "2" position.

If screen slant and adjust DY to be not

slant.

Adjust VR803 G-Bias to center.

Adjust FBT screen VR make luminance

without video to 1.5 ±0.3 FL.

Adjust VR805 make Y value is 0.298 ±

0.015.

Adjust VR801 make X value is 0.283 ±

0.015.

Adjust VR501 make luminance with video

signal to 45 - 50 FL.

Adjust VR804 make Y value is 0.298 ±

0.015.

Adjust VR802 make Xvalue is 0.283 ±

0.015.

Dark, bright balance, repeat to adjust

correctly X, Y value & luminance to

constant.

Adjust VR803 G-Bias to center.

Adjust FBT screen VR make luminance

without video to 1.5 ±0.3 FL.

Adjust VR805 make Y value is 0.329 ±

0.015.

Adjust VR801 make X value is 0.313 ±

0.015.

Adjust VR501 make luminance with video

signal to 45 - 50 FL.

Adjust VR804 make Y value is 0.329 ±

0.015.

Adjust VR802 make X value is 0.313 ±

0.015.

Dark, bright balance, repeat to adjust

correctly X, Y value & luminance to

constant.

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE

PATTERNPATTERN

GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

MONOSCOPE PATTERN

PATTERN GENERATOR

NO SIGNAL

PATTERN GENERATOR

FULL WHITE

PATTERN GENERATOR

NO SIGNAL

PATTERN GENERATOR

FULL WHITE

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR to MAX.

VR303

VR301

VR801,VR803,

VR805,

FBT FOCUS

VR804,VR802,

VR501

VR801,VR803,

VR805,

FBT FOCUS

VR804,VR802,

VR501

–9 –

ADJUSTMENT

ITEM

TIMING

PATTERN SETTING VR

LOCATION ADJUSTMENT PROCEDURE

PATTERN GENERATOR

NO SIGNAL

PATTERN GENERATOR

FULL WHITE

PATTERN GENERATOR

WINDOWS PATTERN

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR TO

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR TO

MAX.

BRIGHT VR ,

CONTRAST VR

and SHARP-

NESS VR TO

MAX.

FBT SCREEN

VR501

VR502

Adjust FBT screen VR make luminance

without video signal is 1.5 ±0.3 FL.

Adjust VR501 make luminance is 45 ~ 50

FL.

Adjust VR502 make luminance is 100 ±3

FL.

Then make sure Full White luminance

whether it is 45 ~ 50 FL.

LUMINANCE

ADJUSTMENT

The way of adjusting it which a color analyzer (Luminance Mindlta) is not used for.

ADJUSTMENT

ITEM

TIMING

PATTERN SETTING VR

LOCATION ADJUSTMENT PROCEDURE

WHITE BAL-

ANCE AD-

JUSTMENT

and

LUMINANCE

ADJUSTMENT

PATTERN GENERATOR

NO SIGNAL

PATTERN GENERATOR

FULL WHITE

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR TO MAX.

BRIGHT VR ,

CONTRAST VR

and SHARPNESS

VR TO MAX.

VR801,VR802,

VR803,VR804,

VR805,

FBT SCREEN

VR804,VR802,

VR501

VR801,VR802,VR803,VR804 and VR805

is center position.

Adjust the VR801, VR805 and FBT

SCREEN VR to dark gray with screen.

Adjust the VR802 and VR804 to white

gray with screen.

Adjust the VR501 it makes the screen of

the monitor proper brightness.

– 10 –

Fig. 7

Fig. 8 Fig. 9

MAIN BOARD

(Parts side)

FUNCTION BOARD

(Parts side)

VIDEO BOARD

(Parts side)

S108

S107 LED101

S106

S104

S101

S103 S102

S105

G2KG

GND

VR501

T502

10 987

VR502

VR306

VR302

VR303

VR401

VR503

IC202

T902

IC301

H-PHASE

X-RAY CON

V-CENT

ABL

H-SIZE

V-LIN

D910

ZD501

IC101

F901

VR305

VR301

V-SIZE

VR901

B+

VR804

VR805

VR801

VR802

B-GAIN

B-BAIS

R-BAIS

R-GAIN

VR803

G-BAIS

PIN1

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