WV-CM1020 - Panasonic Video Monitoring Service Manual (repair manual)

Power Source : 

220 - 240 V AC, 50 Hz

Power Consumption : 

Approx. 47 W

Screen Size : 

250 mm (9-13/16”) diagonal tube screen size, 90˚ deflection
223 mm (8-3/4”) diagonal actual visual size

Horizontal Resolution : 

300 TV lines at center

Video Input : 

1.0 V[p-p] composite/75 

Ω

, BNC with Auto Termination

Audio Input : 

–8 dB/Hi-z, RCA standard jack

Speaker Output : 0.5 

W

Sweep Linearity : 

Horizontal: Less than 5 %
Vertical:

Less than 5%

Sweep Geometry : 

Less than 2 %

Ambient Operating Humidity : 

Less than 90 %

Ambient Operating Temperature : 

–10˚C - +50˚C (14˚F – 122˚F)

Dimensions : 

220(W) x 220 (H) x 309(D)mm [8-11/16”(W)x8-11/16”(H)x12-3/16”(D)]

Weight : 6.5 

kg

(14.3 lbs.)

Weights and dimensions shown are approximate.
Specifications are subject to change without notice.

Rack Mount Bracket ......................................................... WV-Q52AE

WV-CM1020

ORDER NO. AVS0002229C8

ON

A

B

OFF

POWER

INPUT

MENU

–

+

AUDIO

Video Monitor

WV-CM

C

2 0 0 0   M a t s u s h i t a   C o m m u n i c a t i o n   I n d u s t r i a l   C o . ,   L t d .

A l l   r i g h t s   r e s e r v e d .   U n a u t h o r i z e d   c o p y i n g   a n d
d i s t r i b u t i o n   i s   a   v i o l a t i o n   o f   l a w .

This service information is designed for experienced repair technicians only and is not designed for use by the
general public.
It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to
service a product.
Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any
attempt to service or repair the product or products dealt with in this service information by anyone else could
result in serious injury or death.

Y 

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, 
DO NOT REMOVE COVER (OR BACK). NO USER 
SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE
PERSONNEL.

This symbol warns the user that uninsulated voltage within 
the unit may have sufficient magnitude to cause electric 
shock. Therefore, it is dangerous to make any kind of contact 
with any inside part of this unit.

This symbol alerts the user that important literature concerning 
the operation and maintenance of this has been included.
Therefore,  it  should  be  read  carefully  in  order  to avoid 
any problems.

T

here are special components used in this equipment which are important for safety. These parts are indicated 

by the ”

 

Y

 

” mark on the schematic diagram and the replacement parts list. It is essential that these critical 

parts should be replaced with manufacturer's specified parts to prevent X-radiation, shock, fire, or other hazards.

Do not modify the original design without permission of manufacture.

Major Operating Controls and Their Functions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Adjustment Procedure  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Location of Test Points and Adjusting Controls  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Block Diagram  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Conductor View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Replacement Parts List  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

– 1 –

ON

A

B

OFF

POWER

INPUT

MENU

–

+

AUDIO

Video Monitor WV-CM

FOCUS

VIDEO B

IN

OUT

VIDEO A

IN

AUDIO

IN

OUT

OUT

AC IN

q

u

o

i

!5

!0

!1

!2

!3 !4

w

r t

y

e

q

This is a push-push type switch which turns the power of
this monitor on and off.
Press once (switch remains down (

;

)) to turn on the

power of the monitor.
Press again (switch comes up (

l

)) to turn off the power

of the monitor.

Note: There may be a delay of several seconds until the

monitor display comes on.

w

This Indicator is on when the monitor‘s power is turned
on.

e

This is a push-push type switch which selects the signal
input A or B.
Press once (switch remains down (

;

)) to select the

INPUT B signal.
Press again (switch comes up (

l

)) to select the INPUT

A signal.

r

Press to display the setup menu.

t

D

,

C

Press these buttons to select a parameter by moving the
cursor up or down in the parameter rows.

y

• Setup screen adjustment (Menu displayed)

Press these buttons to adjust the level of an item select-
ed in the setup menu.

Note: If you select NORMAL SETTINGS in the Setup

menu, and press the Increment/Decrement button
(–) or (+), all menu parameters will be restored to
the factory default settings.

• Audio adjustment (Menu not displayed)

Press these buttons to increase or decrease the sound
volume. 

u

This control adjusts the screen focus.

i

This control is preset at the factory.

o

For input of audio signal from an outboard device.

!0

The audio input signal connected to the audio input con-
nector 

o

is looped through to this connector.

!1

For input of the PAL composite video signal from an out-
board device.

!2

The video input signal connected to the video input con-
nector 

!1

is looped through to this connector and termi-

nated automatically.

!3

For input of the PAL composite video signal from an out-
board device.

!4

The video input signal connected to the video input con-
nector 

!3

is looped through to this connector and termi-

nated automatically.

!5

Connector for AC power supply cord.