Panasonic WV-CM1480 User manual

SPECIFICATIONS
Power Source : 120 V AC, 60 Hz
Power Consumption : WV-CM2080: 90 W
WV-CM1780: 73 W
WV-CM1480: 70 W
Screen Size : WV-CM2080: 548 mm (21-9/16”) diagonal tube size
508 mm (20”) viewable size
WV-CM1780: 444 mm (17-1/2”) diagonal tube size
406 mm (16”) viewable size
WV-CM1480: 394 mm (15-1/2”) diagonal tube size
356 mm (14”) viewable size
Horizontal Resolution : WV-CM2080: More than 500 TV lines at center
WV-CM1780: More than 800 TV lines at center
WV-CM1480: More than 750 TV lines at center
S-video Input : Y: 1.0 V[p-p]/75 Ω, C: 0.286 V[p-p]/75 Ω, Mini DIN jack
Video Input : 1.0 V[p-p] composite/75 Ω, BNC (x2)
Video Output : Looped through input with Auto Termination, BNC (x2)
Audio Input : –8 dB/Hi-Z, RCA pin-jack (x2)
Audio output : Looped through input, RCA pin-jack (x2)
Horizontal Scanning Frequency : 15.734 kHz
Vertical Scanning Frequency : 60 Hz
Sweep Linearity : Horizontal: Less than 5 %
Vertical: Less than 5 %
Sweep Distortion : Less than 2 %
Speaker Output : 0.7 W
Data Port : 6-conductor Modular Jack (x2)
Standby On/Off Terminal : 1 circuit
Ambient Operating Humidity : Less than 90 %
Ambient Operating Temperature : –10°C - +50°C (14°F - 122°F)
R
WV-CM1480/WV-CM1780/WV-CM2080
ORDER NO. AVS0104348C1
S06
POWER
Video Monitor
WV-CM
2080
ON
OFF
AUDIO
MENU
STANDBY
INPUT
SELECT
C2001 Matsushita Communication Industrial Co., Ltd.
All rights reserved. Unauthorized copying and
distribution is a violation of law.
Color Monitor

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 WARNING
CAUTION
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.
There 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.
IMPORTANT SAFETY NOTICE
Dimensions : WV-CM2080: 482 (W) mm x 443 (H) mm x 476 mm (D) [19”(W) x 17-7/16”(H) x 18-3/4”(D)]
WV-CM1780: 406 mm (W) x 354 mm (H) x 426 mm (D) [16”x 13-15/16”x 16-13/16”]
WV-CM1480: 370 mm (W) x 352 mm (W) x 399 mm (D) [14-9/16”x 13-7/8”x 15-11/16”]
Weight : WV-CM2080: 26.0 kg(57.3 lbs)
WV-CM1780: 18.5 kg(40.8 lbs.)
WV-CM1480: 15.0 kg(33.1 lbs.)
Weight and dimensions shown are approximate.
Specifications are subject to change without notice
ACCESSORIES
Power Cord ................................................................. 1 pc.
Rack Mounting Bracket ............................................... 2 pcs. (WV-CM2080)
Fixing Screws for Rack Mounting Bracket .................. 8 pcs. (WV-CM2080)

SAFETY PRECAUTIONS
GENERAL GUIDELINE
1. When service is required, observe the original lead dress.
Components, wires or cables that indicate evidence of
overheating or other electrical or mechanical damage
should be replaced.
2. After servicing see to that all the protective devices, such
as insulation tape, shields must be properly installed.
3. After servicing, make the following leakage current checks
to prevent the customer from being exposed to shock
hazards.
LEAKAGE CURRENT COLD CHECK
1.Unplug the AC cord and connect a jumper between the
two prongs on the plug.
2.Measure the resistance value, with an ohmmeter, between
the jumpered AC plug and each exposed metallic cabinet
part on the equipment such as screwheads, connectors,
control shafts, etc.
When the exposed metallic part has a return path to the
chassis, the reading should be between 1 MΩand
5.2 MΩ. When the exposed metal does not have a return
path to the chassis, the reading must be ∞(infinity).
Any resistance value below this range indicates an
abnormality which requires corrective action.
3. Repeat the test with the AC switch in the "OFF" position.
LEAKAGE CURRENT HOT CHECK
1.Plug the AC cord directly into adaptor socket and plug
adaptor into the AC outlet. Do not use an isolation
transformer for this check.
2. Connect a 1.5 kΩ/ 10 W resistor, paralleled by 0.15 µF
capacitor, between each exposed metallic part on the unit
and a good earth ground such as a water pipe, as shown
in Figure 1.
3.Use an AC Voltmeter, with 1 kΩ/ Volt or more sensitivity,
to measure the potential across the resistor.
4.Check all exposed metallic parts of the cover (BNC
connector, Handle bracket, Metallic cabinet, Screwheads,
Metallic overlays, etc.), and measure the voltage at each
point.
5.Reverse the AC plug in the AC plug adaptor and repeat
each of the above measurements.
6.The potential at any point should not exceed 0.75 V RMS.
A leakage current tester (SIMPSON MODEL 229 or
equivalent) may be used to make the hot checks.
Leakage current must not exceed 0.5 milliampere.
In case a measurement is outside of the limits specified,
there is a possibility of a shock hazard, and corrective
action must be taken before returning the instrument to
the customer.
AC VOLTMETER
1.5 kΩ
0.15 µFWater Pipe
(Earth Ground)
Test all exposed
metal parts
DEVICE
UNDER
TEST
AC PLUG
ADAPTOR
AC OUTLET Ground Lead Disconnected during safety check.
Fig. 1 Leakage Current Hot Check
PRODUCT COMPLIESWITH DHHS RULES 21 CFR SUBCHAPTER J
APPLICABLE AT DATE OF MANUFACTURE

CONTENTS
Major Operating Controls and Their Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Setting Up for Service of Main Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Adjustment Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Location of Test Points and Adjusting Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Schematic Diagram
Main Board (1/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Main Board (2/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Main Board (3/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Main Board (4/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Main Board (5/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Main Board (6/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Main Board (7/7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
CRT Socket Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Conductor View
Main Board (Component Side View). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Main Board (Pattern Side View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
CRT Socket Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Exploded View
WV-CM1480 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
WV-CM1780 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
WV-CM2080 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Replacement Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

–1 –
ON
OFF
POWER
STANDBY INPUT
SELECT
MENU –+
AUDIO
Video Monitor WV-CM 2080
q w e tyu r
AUDIO
VIDEO
OUTIN OUT
A
IN
B
IN
A
IN
B
IN
OUT OUT AC IN
S-VIDEO
G
STANDBY
ON
STANDBY
OFF
ON OFF
TERMINATION
FOCUS
DATA
PS·Data
!6 @1
!8
!5
!7
!4!3
!1 !2 !9@0
●Front View ● Rear View
* The above figures represent model WV-CM2080.
qPower Button (POWER ON/OFF)
This button turns the power of the monitor on and off.
wPower Indicator
This indicator is on when the power of the monitor is
turned on, also in standby mode.
On: Green light
Standby: Orange light
eStandby Button (STANDBY)
Pressing this button toggles the display mode on the
monitor screen as shown below.
On: Normal display
Standby (Mode 1): Low display brightness
Standby (Mode 2): No display (blackout)
rInput Selection Button (INPUT SELECT)
Selects input in the sequence shown below.
tMenu Button (MENU)
Pressing this button opens the Display Setting menu for
changing the monitor’s display settings.
Pressing this button for 5 seconds or more opens the
COMMUNICATION SETUP menu.
yDirection Buttons (C, D)
These buttons move the cursor to the item parameters
in the Display Setting and Setup menus.
C:Down
D:Up
uDecrement/Increment Buttons (AUDIO -, +)
Press these buttons to increase or decrease the audio
volume.
These buttons also select the item parameter or level in
the Display Setting and Setup menu.
!1 Focus Control (FOCUS)
This control adjusts the screen focus.
!2 Screen Control
This control is preset at the factory.
!3 Data Ports (DATA)
These ports are used to exchange control data with the
System Controller in Panasonic Security Data mode.
!4 Data Termination Selector
(TERMINATION ON/OFF)
This selector is used to enable termination of the moni-
tor’s data port.
VIDEO IN A VIDEO IN B S-VIDEO IN
MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS

–2 –
!5 Standby Control Terminal
(STANDBY ON/STANDBY OFF/G)
This terminal accepts input from an outboard device to
control the standby mode.
It operates as follows:
STANDBY ON: Establishes the specified standby
mode.
STANDBY OFF: Releases standby mode (normal dis-
play).
!6 Audio Input Connectors (AUDIO IN A/B)
For audio input from an outboard device
!7 Audio Output Connectors (AUDIO OUT A/B)
The audio input signal connected to the Audio Input
Connector is looped through to this connector.
!8 S-Video Input Connector (S-VIDEO IN)
For input of S-video signal from an outboard device.
!9 Video Input Connectors (VIDEO IN A/B)
For input of composite video signal from an outboard
device.
@0 Video Output Connectors (VIDEO OUT A/B)
The video input signal connected to the Video Input
Connector is looped through to this connector and termi-
nated automatically.
@1 AC Inlet Socket (AC IN)
Plug the power cord (supplied as a standard accessory)
into this socket and connect it to an AC outlet.

–3 –
8Referring to Fig. 1, remove three screws that secure the
Bottom Cover, and remove the Bottom Cover.
Fig. 1
8Referring to Fig. 2, remove two screws that secure the
Main Board and disconnect two connectors (CN601 and
CN902).
Fig. 2
8Referring to Fig. 3, pull out the Main Board and the Resin
Chassis Ass'y until it stops while pressing the two hooks
on the bottom face.
Fig. 3
8Referring to Fig. 4, remove the Main Board while releasing
three hooks.
Fig. 4
8Mount the Resin Chassis to the Front Panel.
8Referring to Fig. 5, stand the Main Board with two stands
and groove on the Resin Chassis.
Fig. 5
SETTING UP FOR SERVICE OF MAIN BOARD
Bottom Cover
Remove three screws.
Remove two screws.
CN902
Main Board
CN601
Main Board and
Resin Chassis Ass'y
Hook
Main Board
Resin Chassis
Release
three Hooks.
Main Board
Stands
Stand
Resin Chassis
Groove (Rear View)
Main Board

–4 –
Fig. 2-2
3. Connection and Setting up for
Adjustment
3.1. Connection
8Fig. 3-1 shows the connecting diagram for adjustment of
the WV-CM1480/WV-CM1780/WV-CM2080.
Fig 3-1
8Connect the coaxial cable between Video Input Connector
of the WV-CM1480/WV-CM1780/WV-CM2080 and the
Video Output Connector of the Video Signal Generator.
8Disconnect the Modular Cable from the Data Port of the
WV-CM1480/WV-CM1780/WV-CM2080.
8The Fig. 3-2 shows the connecting diagram for the Audio
Section adjustment.
Fig 3-2
ADJUSTMENT PROCEDURE
1. Test Equipments Required
8The following Test Equipments are required for
adjustment of the Color Video Monitor WV-CM1480/WV-
CM1780/WV-CM2080.
8Video Signal Generator
Color Bar Signal
Grayscale Signal (8 stair steps)
Crosshatch Signal or Dot Signal
White Raster Signal
Red, Green and Blue each Raster Signal
8Monoscope Pattern Signal Generator
8Audio Analyzer (VP-7720 or equivalent)
8Oscilloscope
8Digital Voltmeter
8Degaussing Coil
8Ceramic Screwdriver
8Electric Torque Driver
2. Disassembling Procedure for
Adjustment
3WV-CM1480 / WV-CM1780
8Referring to Fig. 2-1, remove eight screws that secure the
Upper Cover and remove the Upper Cover.
Fig. 2-1
3WV-CM2080
8Referring to Fig. 2-2, remove thirteen screws that secure
the Upper Cover and remove the Upper Cover.
Remove eight screws.
Upper Cover
Remove thirteen screws. Upper Cover
WV-CM2080
WV-CM1480
WV-CM1780
Video Signal Generator
VIDEO IN
WV-CM1480
WV-CM1780
WV-CM2080 (Main Board)
SW1
OSC
OUT IN
AUDIO ANALYZER
AUDIO
OUT SPEAKER
OUT
8 Ω / 3 W
31
AUDIO
IN AUDIO
OUT CN601

–5 –
8Connect the Oscillator Output terminal of the Audio
Analyzer and the Audio Input Connector of the WV-
CM1480/WV-CM1780/WV-CM2080.
8Disconnect the Speaker from CN601 on the Main Board
8Connect the Input terminal of the Audio Analyzer and the
Audio Output Connector of the WV-CM1480/WV-
CM1780/WV-CM2080 through selector (Audio Out or
Speaker Out) SW1.
8Terminate the Speaker Output signal with 8 Ω/3 W.
8After completion of adjustment, connect the Speaker to
CN601 on the Main Board.
3.2. Setting Up
8This adjustment should be done after 20 minutes warm up
of the WV-CM1480/WV-CM1780/WV-CM2080.
<Initial Setting>
8Turn on the power.
8Select the Direction Button (Cor D) to the NORMAL
SETTINGS position.
8Press the Increment Button (+) or Decrement Button (–),
and all the setting are initialized.
8Turn the Power Switch off.
<Service Menu>
8Turn on the power while pressing the Increment Button
(+), the Decrement Button (–) and the Menu Button
(MENU) simultaneously, and enter to the Service Mode.
8Press the Menu Button (MENU) once, and the DEF MENU
will appear on the Monitor Screen.
8The items of the DEF MENU changes as shown in Fig. 3-
3 by pressing the Direction Button (Cor D).
Fig. 3-3
8Press the Menu Button (MENU) once, and the W/B MENU
will appear on the Monitor Screen.
8The items of the W/B MENU changes as shown in Fig. 3-4
by pressing the Direction Button (Cor D).
Fig. 3-4
8Press the Menu Button (MENU) once, and the SUB MENU
will appear on the Monitor Screen.
8The items of the SUB MENU changes as shown in Fig. 3-
5 by pressing the Direction Button (Cor D).
Fig. 3-5
8Press the Menu Button (MENU) once, and the ADJ MENU
will appear on the Monitor Screen as shown in Fig. 3-6.
Fig. 3-6
1 STD BRIGHT 90
2 MAX CONTRAST 100
3 STD COLOR 60
4 STD TINT 65
5 MAX AUDIO 170
Pressing
the Direction Button (o)
Pressing
the Direction Button (i)
ADJ MENU
NTSC P-MODEL
ALL RESET NO
MENU END NO SAVE
1 CUTOFF R 0 141
2 CUTOFF G 100
3 CUTOFF B 0 166
4 DRIVE R 143
5 DRIVE B 142
6 SERVICE SW OFF
Pressing
the Direction Button (o)
Pressing
the Direction Button (i)
1 H CENTER 8
2 H SIZE 15
3 V CENTER 100
4 V SIZE 70
5 V LIN 8
6 V S 0
7 SIDE PIN 10
8 +B 45
9 MENU SIZE 45
Pressing
the Direction Button (o)
Pressing
the Direction Button (i)

–6 –
4. Adjustment Procedure
8Refer to the Location of the Test Points and
Adjusting Controls on the page 10.
(1). 120V Adjustment
Test Point: TP901 (120V) Main Board
Adjust: Increment Button (+) Front Panel
Decrement Button (–) Front Panel
8Turn on the power while pressing the Increment Button
(+), the Decrement Button (–) and the Menu Button
(MENU) simultaneously, and enter to the Service Mode.
8Supply the Grayscale signal to Video Input Connector.
8Adjust the SCREEN control so that the stair steps become
visibly certain.
8Enter to the DEF MENU by pressing the Menu Button
(MENU).
8Select +B by pressing the Direction Button (Cor D).
8Connect the Digital Multimeter to TP901.
8Adjust +B by pressing the Increment Button (+) or the
Decrement Button (–) so that the DC voltage at TP901
becomes 120 V ± 0.5 V.
(2). Screen Cut off Coarse Adjustment
Test Point: TP802 (G) CRT Board
Adjust: Increment Button (+) Front Panel
Decrement Button (–) Front Panel
SCREEN Control of Flyback Transformer
Main Board
8Supply the Grayscale signal to Video Input Connector.
8Enter to the SUB MENU by pressing the Menu Button
(MENU).
8Select STD BRIGHT by pressing the Direction Button (C
or D).
8Connect the Oscilloscope to TP802.
8Set the Input Selector of the Oscilloscope to the DC Mode.
8Adjust STD BRIGHT by pressing the Increment Button (+)
or the Decrement Button (–) so that G Pedestal becomes
135 V ± 2 V as shown in Fig. 4-1.
Fig. 4-1
8Adjust the SCREEN control so that only the 8th step of
stair steps becomes cut off.
(3). Contrast Adjustment
Test Point: TP802 (G) CRT Socket Board
Adjust: Increment Button (+) Front Panel
Decrement Button (–) Front Panel
8Supply the Grayscale signal to the Video Input Connector.
8Enter to the SUB MENU by pressing the Menu Button
(MENU).
8Select STD BRIGHT by pressing the Direction Button (C
or D).
8Note the current value of STD BRIGHT, and set STD
BRIGHT to 0by pressing the Increment Button (+) or the
Decrement Button (–).
8Select MAX CONTRAST by pressing the Direction Button
(Cor D).
8Connect the Oscilloscope to TP802.
8Set the Input Selector of the Oscilloscope to the AC Mode.
8Adjust MAX CONTRAST by pressing the Increment
Button (+) or the Decrement Button (–) so that the output
of TP802 becomes 70 V ± 3 V[p-p] as shown in Fig. 4-2.
Fig. 4-2
8Select the STD BRIGHT item by pressing the Direction
Button (Cor D).
8Set STD BRIGHT to the noted value.
(4). Centering and Size Coarse Adjustment
Adjust: Increment Button (+) Front Panel
Decrement Button (–) Front Panel
Observe: Video Monitor Screen
8Supply the Monoscope Pattern signal to the Video Input
Connector.
8Enter to the DEF MENU by pressing the Menu Button
(MENU).
8Select H CENTER by pressing the Direction Button (Cor
D).
8Adjust H CENTER by pressing the Increment Button (+) or
the Decrement Button (–) so that the screen is set to the
horizontal center position.
8Select H SIZE by pressing the Direction Button (Cor D).
8Adjust H SIZE by pressing the Increment Button (+) or the
Decrement Button (–) so that the full horizontal width
becomes approx. 8 % overscanning.
8Select SIDE PIN by pressing the Direction Button (Cor
D).
70 V ±3 V[p-p]
135 V ±2 V
GND