Sony PVM-1444QM User manual

SERVICE MANUAL AEP Model
PVM-1440QM
Chassis No. SCC-C57A-A
PVM-1442QM
Chassis No. SCC-C56A-A
PVM-1444QM
Chassis No. SCC-C55A-A
(PVM-1444QM)
Video signal
Frequency response
Line input: More than 7MHz (-3 dB)
Y/C input: More lhan 8MHz (-3 dB)
Component input (Y/R-Y/B-Y): More than 8MHz
(-3 dB)
R.G.B. input (analog): More than 9MHz (-3 dB)
Chrominance subcarrier attenuation
3.58 MHz: Less than -30 dB (comb filter)
4.43 MHz: Less than -36 dB (trap filter)
Bandpass 3.58 MHz: 2MHz equiband
4.43 MHz: 2MHz equiband
Chrominance/luminance time error
Composite: Less than ±100 ns
Y/C Video: Less than ±50 ns
Component: Less than ±50 ns
Aperture correction
-4.5 to +6.5 dB (at 4.5 MHz)
Synchronization AFC time constant: 1msec
Line pull range Horizontal: ±500 Hz
Vertical: 8Hz
Picture performance
Normal scan 7% overscan of CRT effective screen area
Under scan 3% underscan of CRT effective screen area
H. linearity error Less than 4%
V. linearity error Less than 5%
Convergence Central area: 0.6 mm
Peripheral area: 0.8 mm
Raster size stability
H: 1.0%, V: 1.5%
High voltage regulation
3%
Audio output 0.6 W(Max.)
CRT PVM-1444QM/PVM-1442QM: EBU
PVM-1440QM: P-22
Chromacity coordinates (EBU only)
iXY
Red •0.640 0.330
Green 0.290 0.600
Blue 10.150 0.060
(tolerance ±0.01)
Color temperature
6,500° K/9,300° K(+8MPCD), selectable
AC regulation range
220 -240 VAC, 50/60 Hz
Power consumption
Approx. 75 Wh
SPECIFICATIONS
inputs
For ail models
VIDEO IN: BNC connector
AUDIO IN: phono jack
VTR: 8-pin connector
Y/C-INPUT
VIDEO: 4pin connector
AUDIO: phono jack
PVM-1444QM only
EXT SYNC: BNC connector
composite sync 1-4 Vp-p, negative, 75 ohms terminated,
automatically released when cable is connected to the output
connector.
ANALOG RGB/COMPONENT: BNC connector
R, G, Band Ychannels: 0.7 Vp-p, ±6 dB, non composite
R-Y and B-Y channels: 0.525 Vp-p, ±6 dB
(Standard color bar signal of 75-percent chrominance)
When the composite signal is fed to the Gor Ychannels, the
monitor can be activated in the internal sync mode.
75 ohms terminated, automatically released when acable is
connected to the output connector.
CTRL S: Minijack
.w. wokiub manuals
MAURITRON SERVICES
8Cherry Tree Road, Chinnor
Oxfordshire, OX9 4QY
Tel [phone]
Fax [phone]
email:- [email protected]
PVM-1442QM only
EXT SYNC: BNC connector
composite sync 1-4 Vp-p. negative, 75 ohms terminated,
automatically released when cable is connected to the output
connector.
ANALOG RGB: BNC connector
0.7 Vp-p, ±6 dB, non composite
75 ohms terrrftnated, automatically released when cable is
connected to the output connector.
DIGITAL RGB: 9-pin connector
CTRL S: Minijack
PVM-1440QM
ANALOG RGB signal through AV: 0.7 Vp-p, ±6 dB, non composite,
75 ohms terminated
—Continued on next page —
TRINITRON ®COLOR VIDEO MONITOR
SONY

PVM-1 440QM/1 442QM/1 444QM
Outputs
For all models
VIDEO OUT: BNC connector
Loop-through
AUDIO OUT: Phono lack
Loop-through
PVM-1 444QM only
EXT SYNC: BNC connector
Loop-through
ANALOG RGB/COMPONENT: BNC connector
Loop-through
CTRL S; Minijack
Loop-through
PVM-1 442QM only
EXT SYNC: BNC connector
Loop-through
ANALOG RGB BNC connector
Loop-through
CTRLS: Minijack
Loop-th rough
General
Dimensions Approx. 346 *340 *412 mm (w/h/d)
(13V(x13*/i* 16V- inches)
Weight Approx. 16.5 kg (36 lb 6oz)
Pin assignment
DIGITAL RGB connector (9-pin)
TTTTa
oOOOO
Pin No. Signal Signal level
iGND (ground) GND
2GND lor the signal GND
3Red input Positive polarity (TTL level)
4Green input
15Blue input r
|6Intensity !
1
:7
1
—•—-————
NC (no connection) —
8H-SYNC Positive or negative polarity (TTL level)
Same polarity as H-SYNC (TTL level)
If the intensity function of Pin No. 6 is not used, set the
internal switch on the Qd board to the Bposition, and
connect the Pin No. 6to the GND. With this setting, when the
positive intensity signal synchronized to the characters on
the screen is fed, the luminance of the characters will be
increased.
If the specific intensity function, such as that of an IBM
microcomputer, is used, set the internal switch on the Qd
board to the Aposition, and feed the intensity control signal
to Pin No. 6.
VTR connector (8-pin)
Pin No. Signal Description
iAudio input -5 dBs. high input impedance (more than 47 kilohms)
2Video input Composite 1Vp-p. sync negative. 75 ohms
3GND GND
4NC —
5GNO GND
6GND GND
7GND GNO
8GND jGND
Y/C (Y/C separate) INPUT connector (4-pin)
Pin No. Signal Description
iY-mput iVp-p, sync negative, 75 ohms
2CHROMA sub-carrier-mput 300 mVp-p, burst
Delay time between Yand C: within 0±100 nsec., 75 ohms
3GND for Y-input GND
4GND for CHROMA-input GND
•|(Slot for internal switch)
1
Press the switch inside this slot. The signal from Y/C-INPUT
connector has priority over the one from VTR (8-pin)
connector
-2-

AV (EURO-TV) connector (21-pin) -
20 16 16 14 12 10 B642
°Yiddd !I
21 19 17 15 13 11 97531
Pin No. Signal Description
iAudio output B(right)
Standard level.
0.5 Vrnrts
Output impedance:
Less than 1kohm*
2Audio input B(right)
Standard level:
0 5 Vrms
Input impedance:
More than
10 kohms*
3Audio output A(left)
Standard level:
0.5 Vrms
Output impedance:
Less than 1kohm *
4GND for audio GNO
5GND for blue input GND
6Audio input A(left)
Standard level:
0.5 Vrms
Input impedance: More
than lOkohms*
7Blue input 0.7 V±3dB, 75 ohms
8Function select
(AV control)
High state (9.5- 12 V):
Peri mode
Low state (0 -2V):
TV mode
Input impedance: More
than 10 kohms
Input capacitance:
Less than 2nF
Pin No. Signal Description
sGND for green input GND
10 NC
11 Green input |(Same as Pin 7)
12 NC
13 GND for red input GND
14 GND for blanking input GND
15 Red input (Same as Pin 7)
16 Blanking input
High state (1 -3V)
Low stale (0 -0.4 V)
Input impedance:
75 ohms
17 GND for video output GND
18 GND for video input GND
19 Video output* *1V±3dB, 75 ohms
Sync: 03V(^3 dB)
20 Video input 1V±3 dB, 75 ohms
Sync: 0.3 V(±3dB)
21 Common GND (plug,
shield)
GND
•at 20Hz -20 khz
**Outputs the video signal fed through the LINE Aconnector, when the
AV input mode is selected
Design and specifications subject to change without notice.
I
TABLE OF CONTENTS
Section Title Page
1. GENERAL
1-1.Features 4
1—2. Location and Function of Parts and
Controls 5
2. DISASSEMBLY
2-1. Rear Cover and Top Cover Removal 9
2-2. Terminal Board Removal 9
2-3. Bracket of Terminal Board Removal 10
2-4. Control Unit Removal 10
2-5. Note on Wiring the Troida! Coil and
It’s Peripheral Part 10
2-
6. Picture Tube Removal 11
3. SET UP ADJUSTMENTS
3-
1. Beam Landing 12
3-2. Convergence 13
3-3. Focus 14
3-4. White Balance 15
4. SAFETY RELATED ADJUSTMENTS 16
WARNING !
!
AN ISOLATION TRANSFORMER SHOULD BE USED
DURING ANY SERVICE TO AVOID POSSIBLE SHOCK
HAZARD, BECAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CON-
NECTED TO THE AC POWER LINE.
Section Title Page
5. CIRCUIT ADJUSTMENTS
5-1. ABoard Adjustments 18
5-2. XA Board Adjustment 21
5-
3. BA Board Adjustments 22
6. DIAGRAMS
6-
1. Frame Schematic Diagram 25
6-2. Block Diagrams 27
6-3. Printed Wiring Boards 36
6-4. Circuit Boards Location 41
6-5. Schematic Diagram 41
6-
6. Semiconductors 69
7. EXPLODED VIEWS
7-1.Chassis 71
7-
2. Picture Tube 72
8. ELECTRICAL PARTS LIST 73
SAFETY RELATED COMPONENT WARNING !!
COMPONENTS IDENTIFIED BY SHADING AND MARK
ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL TO
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS
THAT ARE CRITICAL TO SAFE OPERATION ARE
IDENTIFIED IN THIS MANUAL. FOLLOW THESE PRO
CEDURES WHENEVER CRITICAL COMPONENTS ARE
REPLACED OR IMPROPER OPERATION IS SUSPECTED.
-3-

SECTION 1
GENERAL
1-1. FEATURES
This chart shows the various features which your model has (indicated as “Yes”).
Features PVM 1444QM PVM-1442QM PVM-1440QM
Automatic white balance circuit Yes Yes Yes
EBU phosphor Yes Yes No
Black-tinted Trinitron tube No No Yes
Super Fine Pitch Trinitron picture tube Yes Yes No
Analog RGB/component input/output Yes No No
Analog RGB input/output No Yes No
Digital RGB input (9-pin) No Yes No
Y/C input (4-pin DIN) Yes Yes Yes
VTR input (8-pin) Yes Yes Yes
Control Sinput/output Yes Yes No
Automatic release of BNC-type input connector termination SYes Yes Yes
Color systems available PAL SECAM, NTSCJ58 NTSC443
Comb filter Yes Yes Yes
Blue only mode Yes Yes Yes
Underscan mode Yes Yes No
Horizontal/vertical delay mode Yes Yes No
External sync input/output Yes Yes No
Color temperature selector Yes Yes Yes
Ught-touch picture adjustment buttons Yes Yes No
AV (EUROTV) connector (21 -pin) No No Yes
EIA standard 19-inch rack mounting Yes Yes Yes
Automatic white balance circuit
The automatic white balance circuit compensates for the
beam distortion, secular distortion of the cathode-ray tube,
etc., and always reproduces the same white display on the
screen. This allows an extended use of the monitor.
Super Fine Pitch Trinitron picture tube
(PVM-1444QM/1442QM only)
The Super Fine Pitch Trinitron picture tube (0.25 mm aperture
grill) gives high resolution picture. Horizontal resolution is
more than 600 TV tines at the center of the picture. When
used as acharacter display, up to 2.000 characters (80
characters/line *25 lines) can be displayed with great clarity.
Analog RGB/component connector (PVM-1444QM only)
Analog RGB and component signals of avideo equipment
can be input through this connector. The signals are
selected by the COMPO/RGB selector on the rear panel.
Analog RGB connector (PVM-1442QM only)
Analog RGB signal of avideo equipment can be input
through this connector.
Digital RGB input connector (PVM-1442QM only)
Digital RGB signal from amicrocomputer can be input
through this connector.
Y/C input connector
The video signal split into the chrominance signal (C) and the
luminance signal (Y) can be input through this connector,
eliminating the interference between the two signals which
tends to occur in acomposite video signal and assuring the
video quality.
VTR input connector
When connected to aVTR having the 8-pin TV connector,
video and audio signals can be led through this connector
with asingle cable.
Control Sconnector (except PVM-1440QM)
When this connector is connected to the “control S" output
of other equipment, the remote controls of the aperture,
brightness, chroma, phase, contrast and volume settings are
possible.
Automatic release of BNC-type connector termination
The BNC-type input connector is terminated at 75 ohms
inside when the BNC-type output connector is open. When a
cable is connected to the BNC-type output connector, the
75ohm termination is automatically released, and the signal
input through the IN connector is output from the
corresponding OUT connector.
Four color systems available
The monitor can display PAL, SECAM, NTSC358 and
NTSC4.43 *signals. The appropriate color system is selected
automatically.
•Asignal of NTSCU 43 is obtained by playing back NTSC-
recorded video cassettes with avideo tape recorder/player
especially designed for use with this system.
Comb Filter
When NTSC video signals are received, acomb filter
activates to increase the resolution, resulting in fine picture
detail without color spill or color noise.
Blue only mode
In the blue only mode, an apparent monochrome display is
obtained with all three cathodes driven with ablue signal.
This facilitates color saturation and phase adjustments and
observation of VTR noise.
Underscan mode (except PVM-1440QM)
The signal normally scanned outside of the screen can be
monitored in the underscan mode.
The bright scanning lines which may appear on the top edge
of the screen when the monitor is in the underscan mode are
caused by an internal test signal, rather than the input signal.
HorizontalA/ertical delay mode (except PVM-1440QM)
The horizontal and vertical sync signals can be checked
simultaneously in the H/V delay mode.
External sync input (except PVM-1440QM)
When the EXT SYNC (or ANALOG/DIGITAL (EXT SYNC))
button is depressed, the monitor can be operated on the
sync signal supplied from an external sync generator.
Color temperature selector
Color temperature of either 9,300°K or 6.500°K is selectable
with the COLOR TEMP selector. For precise adjustment, use
the BIAS and GAIN adjustment controls (except
PVM-1440QM).
Light-touch picture adjustment buttons (except
PVM-1440QM)
The aperture, brightness, chroma, phase, contrast and
volume buttons can be adjusted by touching the buttons
lightly. The adjusted settings will be stored in memory even
when the monitor is turned off.
AV (EURO-TV) connector (PVM-1440QM only)
Analog RGB signals can be input through the 21 -pin AV
(EURO-TV) connector. This allows connection of peripheral
equipments such as decoders.
Superimposition (PVM-l440QMonly>
The data fed through the AV (EURO-TV) connector can be
superimposed on the picture from the LINE A, LINE Bor
Y/C/VTR input.
E1A standard 19-inch rack mounting
By using an optional MB-502A mounting bracket, the monitor
can be mounted in an El Astandard 19-inch rack. An optional
SLR- 102 slide rail is also available. For details on mounting,
see the appropriate instruction manual.

1-2. LOCATION AND FUNCTION OF PARTS AND CONTROLS
[Front panel |PVM-1444QM
BIAS and GAIN adjustment controls
RESET button and response indicator
APERTURE buttons
BRIGHT (brightness) buttons
CHROMA buttons
PHASE buttons
CONTRAST buttons
VOL (volume) buttons
POWER switch and indicator
INPUT select buttons
EXT SYNC button
H-V DELAY button
UNDER SCAN button
BLUE ONLY button
Color system indicators
]Front panel |PVM-1442QM
-[T] BIAS and GAIN adjustment controls
-jT RESET button and response indicator
~[3j APERTURE buttons
~:T] BRIGHT (brightness) buttons
—'5] CHROMA buttons
-j] PHASE buttons
-T CONTRAST buttons
—VOL (volume) buttons
—[9j POWER switch and indicator
-[I2i H-V DELAY button
-51 UNDER SCAN button
-553 BLUE ONLY button
—T5; Color system indicators
~5I INPUT select buttons
—57) ANALOG/DIGITAL (EXT SYNC) button
BIAS and GAIN adjustment controls
Used tor white balance adjustment
Gain and BIAS controls are provided tor the R(red), G
(green) and B(blue) screens.
BIAS: Adjust the white balance and brightness of the
screen at the lowlight with these controls.
GAIN: Adiust the white balance and contrast of the
screen at the highlight with these controls.
RESET button and response indicator
Press to return the PHASE, CHROMA. BRIGHT and
APERTURE control settings to the factory set levels.
The response indicator flashes when the above buttons or
the RESET button is pressed.
APERTURE buttons
Press +tor more sharpness or -for less.
BRIGHT (brightness) buttons
Press +tor more brightness or -for less.
CHROMA buttons
Press +for more color intensity or -for less.
PHASE buttons
This button is effective only for the NTSCase and NTSC443
color system.
Press GRN (green) to make the skin tones greenish or
PUR (purple) to make them purplish.
The APERTURE, CHROMA. PHASE control settings have no
effect on the pictures of analog RGB or digital RGB signals.
CONTRAST buttons
Press +to make the contrast, color intensity and
brightness stronger or -to make them weaker.
TVOL (volume) buttons
Press 4for more volume or -for less.
POWER switch and indicator
Depress to turn the monitor on
The indicator will light up in green
Press the switch again to turn the monitor off.
JO1INPUT select buttons
Press to select the program to be monitored.
A: for asignal fed through the LINE Aconnectors.
B: for asignal fed through the LINE Bconnectors
Y/C/VTR: for asignal fed through the Y/C-tNPUT
connectors or VTR connector.
When both the Y/C-INPUT and VTR connectors are
connected to video equipment, the input signal fed
through the Y/OINPUT connector has priority over the
one fed through the VTR connector
ANALOG RGB/COMPONENT: for asignal fed through
the ANALOG RGB/COMPONENT connectors.
For connection, refer to the explanation of ANALOG
RGB/COMPONENT connectors
QT1 EXT SYNC (external sync) button
Normally keep this button released (INT). The monitor
operates on the sync signal from the displayed composite
video signal.
To operate the monitor on an external sync signal fed
through the EXT SYNC connector on the rear panel,
depress the button (EXT).
5DH-V DELAY button
Depress to observe the horizontal and vertical sync
signals at the same time.
The horizontal sync signal is displayed in the left quarter
of the screen; the vertical signal is displayed near the 1
center of the screen.
51 UNDER SCAN button
Depress for underscanning. The display size is reduced by
approximately 3% so that four corners of the raster are
visible.
54] BLUE ONLY button
Depress to turn off the red and green signals. Ablue
signal is displayed as an apparent monochrome picture
on the screen. This facilitates "chroma” and “phase*”
control adjustments and observation of VTR noise.
*‘Phase' control ad|ustmenl is effective only tor the NTSC signals
5® Color system indicators
The indicator of the color system being received lights up
in red.
5® INPUT select buttons
Press to select the program to be monitored
A: for asignal fed through the LINE Aconnectors.
B: for asignal fed through the LINE Bconnectors.
Y/CA/TR: for asignal fed through the Y/C-INPUT
connectors or VTR connector.
When both the Y/C-INPUT and VTR connectors are
connected to video equipment, the input signal fed
through the Y/C-INPUT connector has priority over the
one fed through the VTR connector
RGB: for asignal fed through the ANALOG RGB
connectors or DIGITAL RGB connector.
51] ANALOG/DfGITAL (EXT SYNC) button
This button functions as ANALOG/DIGITAL selector and
EXT SYNC selector.
As ANALOG/DIGITAL selector
Depress to monitor asignal fed through the ANALOG
RGB connectors.
Release to monitor asignal fed through the DIGITAL RGB
connector
For EXT SYNC selector
Depress to operate the monitor on an external sync signal
fed through the EXT SYNC connector on the rear panel
(EXT).
Release to operate the monitor on the sync signal from
the displayed composite video signal (INT).

|Front panel
]PVM-1440QM
dAPERTURE control
Turn toward +for more sharpness or toward -for iess.
01 BRIGHT (brightness) control
Turn toward +for more brightness or toward -for less.
Normally set this control at the center detent position.
MCHROMA control
Turn toward +for more color intensity or toward -for
less.
PPHASE control
Turn toward GRN (green) to make the skin tones greenish
or toward PUR (purple) to make them purplish.
The APERTURE, CHROMA. PHASE control settings have no
effect on the pictures input through the ANALOG RGB IN
connector.
[22] CONTRAST control
Turn toward +to make the contrast, color intensity and
brightness stronger or toward -to make them weaker.
HI VOL (volume) control
Turn toward +for more volume or toward -for less.
dPOWER switch and indicator
Same as [T].
Picture Adjustment Buttons
The picture adjustment buttons of each monitor operate in the following input mode (indicated as “Yes").
APERTURE control
BRIGHT (brightness} control
CHROMA control
PHASE control
CONTRAST control
VOL (volume) control
POWER switch and indicator
INPUT select buttons
BLUE ONLY button
Color system indicators
Model Input mode APERTURE BRIGHT CHROMA PHASE CONTRAST VOL
PVM-1444QM
•LINE A, LINES
•Y/C
•VTR Yes Yes Yes Yes
(NTSC only) Yes Yes
Analog RGB No Yes No No Yes Yes
Component Yes Yes Yes No Yes Yes
PVM-14420M
•LINE A, LINE 8
•Y/C
•VTR Yes Yes Yes Yes
(NTSC only) Yes Yes
•Digital RGB
•Analog RGB No Yes No No Yes No
PVM-1440QM
•LINE A, LINE 8
•Y/C
•VTR Yes ;Yes 1Yes Yes
(NTSC only) Yes Yes
AV
(RGB signal only) No 'Yes
1
]No No Yes No
75; INPUT select buttons
Press to select the program to be monitored.
A: for asignal fed through the LINE Aconnectors.
B: for asignal fed through the LINE Bconnectors.
Y/C/VTR: for asignal fed through the Y/C-INPUT
connectors or VTR connector
When both the Y/C-INPUT and VTR connectors are
connected to video equipment, the input signal fed
through the Y/C-INPUT connector has priority over the
one fed through the VTR connector.
AV: for asignal fed through the AV (EURO-TV) connector.
To superimpose the data fed through the AV (EURO-
TV) connector over the picture being displayed:
1Press A, Bor Y/C/VTR to display the picture on which
the data is to be superimposed.
Be sure the SUPERIMPOSE selector on the rear
panel is set to ON.
2Press AV.
The data is superimposed over the picture.
7f BLUE ONLY button
Same as[U].
[27] Color system indicators
Sameasljf.

Rear panel |PVM-1444QM
-fTj LINE A, LINE Bconnectors
-[Z] Y/C-INPUT connectors
VTR input connectors
COLOR TEMP selector
COMPO/RGB selector
VHOLD control
EXT SYNC connectors
CTRL Sconnectors
ANALOG RGB/COMPONENT connectors,
AUDIO IN connector
Rear pane* PVM-1442QM
-1]
-T
_7J
-53
-I]
-13
-Tg
-Tl
LINE A, LINE Bconnectors
Y/C-INPUT connectors
VTR input connectors
COLOR TEMP selector
VHOLD control
CTRL Sconnectors
DIGITAL RGB connector
HCENT control
-Ijj EXT SYNC connectors
-J3; ANALOG RGB connectors
Rear panet^ PVM-1440QM
LINE A, LINE Bconnectors
Two groups (A and B) of line input connectors tor the
composite video and audio signals and their loop-through
output connectors.
To monitor the input signal ted through these connectors,
press the Aor Binput select button on the front panel.
VIDEO IN (BNC type): Connect to the video output of a
video equipment, such as aVTR or acolor video
camera. For a loop-through connection, connect to the
video output of another monitor.
VIDEO OUT (BNC type): Loop-through output of the
VIDEO IN connector. Connect to the video input for a
VTR or another monitor.
When the cable is connected to this connector, the
75-ohms termination of the input is automatically
released, and the signal input to the VIDEO IN
connector is output from this connector.
AUDIO IN (phono jack): Connect to the audio output of a
VTR or to amicrophone via asuitable microphone
amplifier. For a loop-through connection, connect to
the audio output of another monitor.
AUDIO OUT (phono jack): Loop-through output of the
AUDIO IN jack. Connect to the audio input of aVTR or
another monitor.
\Jj Y/C-INPUT connectors (4-pin)
VIDEO: Connect to the Y/C separate output of avideo
camera or aVTR.
AUDIO: Connect to the audio output of avideo camera or
aVTR.
To monitor the input signal fed through these connectors,
press the Y/C/VTR button on the front panel.
[3 3VTR input connectors (8-pin)
Line input for the video and audio signals When
connected to the 8-pin TV connector of aVTR, the video
and audio playback signal from the VTR can be input
through asingle cable
To monitor the input signal fed through this connector,
press the Y/C/VTR button on the front panel, with the
Y/C-INPUT connectors connected to no outputs.
When both VTR and Y/C-INPUT connectors are connected
to video equipment, the input signal fed through the
Y/C-INPUT connectors has priority over the one fed
through the VTR connectors.
TCOLOR TEMP (temperature) selector
Select the color temperature position, 9300°K or 6500°K
[S'] COMPO (componentyRGB selector
Set to COMPO to monitor component signal fed through
the R/R-Y, G/Y, B/B-Y connectors
Set to RGB to monitor analog R/G/B signal fed through
the R/R Y, G/Y, B/B-Y connectors.
[JjV HOLD (vertical hold) control
Turn to stabilize the picture if it rolls vertically.
Q] EXT SYNC (external sync) connectors (BNC type)
IN: Connect to the output of async generator.
To use the sync signal fed through this connector,
depress the EXT SYNC button.
OUT: Loop-through output of the SYNC IN connector.
Connect to the SYNC input of avideo camera.
When the cable is connected to this monitor, the
75-ohms termination of the input is released, and the
signal input to the IN connector is output from this
connector.
[|] CTRL S(control S) connectors (minijack)
For remote control of the APERTURE, BRIGHT, 1
CHROMA. PHASE, CONTRAST and VOL control buttons.
IN: Connect to the "control S" output of other equipment.
OUT: Connect to the CTRL SIN connector of another
monitor by using aconnecting cord (miniplug~
miniplug).
[Ft ANALOG RGB/COMPONENT connectors (BNC type)
R/R-Y IN, G/Y IN, B/B-Y IN:
To monitor the analog R/G/B signal, connect to the
analog R/G/B signal outputs of avideo camera having no
sync signal.
Set the COMPO/RGB selector on the rear panel to RGB
and press the ANALOG RGB/COMPONENT button on the
front panel. When the EXT SYNC button is released, the
monitor operates on the sync signal from the Gchannel.
To monitor the component signal, connect to the
R-Y/Y/B-Y component signal outputs of aBETACAM video
camera. Set the COMPO/RGB selector on the rear panel
to COMPO and press the ANALOG RGB/COMPONENf
button on the front panel When the EXT SYNC button is
released, the monitor operates on the sync signal from
the Ychannel.
R/R-Y OUT, G/Y OUT, B/B-Y OUT:
Loop-through outputs of the R/R-Y IN. G/Y IN, B/B-Y IN
connectors.
For R/G/B signal, connect to the analog R/G/B signal
inputs of a video camera.
For component signal, connect to the R-Y/Y/B-Y
component signal inputs of aBETACAM video camera.
When the cables are connected to these connectors, the
75-ohms termination of the input is automatically
released, and the signal inputs to the R/R-Y IN, G/Y IN.
B/B-Y IN connectors are output from these connectors
AUDIO IN: Connect to the audio output of video
equipment when the analog R/G/B or component
signal is input.

[lOj DIGITAL RGB connector (9-pin)
Connect with amicrocomputer having adigital fTTL levelL,
RGB video output.
To monitor the input signal fed through this connector,
press the RGB button and keep the ANALOG/DIGITAL
(EXT SYNC) button released.
For connection, be sure to use an optional SMF-520
connecting cable.
[1J]H CENT (horizontal centering) control
When adigital R/G/B signal is monitored, turn to center
the picture if it is decentered.
[XU EXT SYNC (external sync) connectors (BNCtype)
IN: Connect to the output of async generator.
To monitor the sync signal fed through this connector,
depress the ANALOG/DIGITAL (EXT SYNC) button.
OUT:Loop-through output of the SYNC IN connector.
Connect to the SYNC input of avideo camera.
When the cable is connected to this connector, the
75-ohms termination of the input is released, and the
signal input to the IN connector is output from this
connector.
[ttj ANALOG RGB connectors (BNCtype)
R/G/B IN: Connect to the analog R/G/B outputs of a
video camera.
To monitor asignal fed through these connectors, press
the RGB button and depress the ANALOG/DIGITAL (EXT
SYNC) button.
R/G/B OUT: Loop-through outputs of the R/G/B IN
connectors. Connect to the analog R/G/B inputs of a
video camera.
When the cable is connected to these connectors, the
75-ohms termination of the input is released, and the
signal input to the R/G/B IN connectors is output from
these connectors.
[Mj SUPERIMPOSE selector
Normally set to ON.
Set to OFF to display the analog RGB signal fed through
the AV (EURO-TV) connector.
gf] AV (EUROTV) connector (21-pin)
Connect to the 21 -pin multiconnector of decoders.

A
.{' ‘
j.
‘•.
PVM-1 440QM/1 442QM/1 444QM
SECTION 2
DISASSEMBLY
2-1. REAR COVER AND TOP COVER REMOVAL
2-2. TERMINAL BOARD REMOVAL
Note :When you remove terminal board, pull out Aboard ashort distance.
<D
©Remove the terminal board as arrow (B)
while push the two claws as arrow (a).
-9-

PVM- 1440QM/1 442QM/1 444QM
2-3. BRACKET OF TERMINAL BOARD 2-4. CONTROL UNIT REMOVAL
REMOVAL
©Remove the bracket of terminal board as arrow (@)
while extend two daws as arrow ®.
©Pull out the cabinet
bottom as arrow
of
2-5. NOTE ON WIRING THE TROIDAL
COIL AND ITS PERIPHERAL PART
Fix the troidal coil with
15 mm dia. Pulse Lock.
the commom.
-10

PVM-1 440QM/1 442QM/1 444QM
2-6. PICTURE TUBE REMOVAL
3. Use KE-490RTV (RTV silicone adhesive, SHIN-ETSU
CHEMICAL).
NOTE :Caution for ANODE CAP installation.
When you replace PICTURE TUBE or FBT, remove RTV
on ANODE CAP so that PICTURE TUBE and FBT can
be separated. Please adhere picture tube and anode
cap in accordance with the following procedure.
ADHERING PROCEDURE OF ANODE CAP.
1. Clean PICTURE TUBE ANODE CAP with ethanol
to remove original RTV.
2. Dry clean face with air.
Part. No. Description
7-322-065-19 Silicone (RTV) KE-490W
4. Install ANODE CAP.
5. Adeguately apply RTV to the entire picture tube
anode area, piece the anode cap onto the picture
tube and push it down securely so that no air
pockets remain beneath the cap.
6. Dry more than 12 hours at room temperature.
\
ANODE CAP REMOVAL
•Removing Procedures
(T) Turn up one side of the rubber cap in the direction
indicated by the arrow (a)
.
Q) Using aThumb,pu/i up the rubber cap firmly in the
direction indicated by the arrow @.
Q) When one side of the rubber cap is separated from the
anode button, the anode cap can be removed by turning
up the rubber cap and pulling up it in the direction of the
arrow (c).

rvivi- itfM-uuiVI/ I44ZUIVI/ 1444UM
SECTION 3
SET-UP ADJUSTMENTS
•The following adjustments should be made when
acomplete realignment is required or anew picture
tube is installed.
•These adjustments should be performed with rated
power supply voltage unless ontherwise noted.
The control and switch below should be set as follows
unless otherwise noted :
CONTRAST control 80%
BRIGHTNESS control 50%
Perform the adjustments in order as follows
3-1. Beam Landing
3-2. Convergence
3-3. Focus
3-4. White Balance
Note :Test Equipment Required.
1. Color Bar/Pattern Generator
2. Degausser
3. Color Annalyzer (Minolta)
4. Luminance Level Meter
5. Oscilloscope
Precaution
•Set the side of the unit with the PICTURE TUBE
so that it faces east or west in order to reduce
the influence of external magnetic force.
•Turn the power switch for the unit ON and erase
the magnetic force using adegausser.
3-1. BEAM LANDING
1. Receive an entirely white signal with the pattern
generator.
CONTRAST MAX.
BRIGHTNESS set easy to observe
2. Adjust the focus and the horizontal convengence
roughly.
3. Loosen the deflection yoke mounting screw, and
set the purity control to the center as shown in
Fig. 3-1.
4. Switch over the pattern generator to green.
5. Move the deflection yoke backward, and adjust
with the purity control so that green is in the
center and blue and red are at the sides, evenly.
(Fig. 3-2)
6. Move the deflection yoke forward, and adjust so
that the entire screen becomes green. Repeat 5
to 17as to red and blue.
7. When landing at the corners is not right, correct
by using the magnet. (Fig. 3-3)
8. When the position of the deflection yoke is
determined, tighten it with adeflection yoke
mounting screw.
Fig. 3-2
-12 -Fig. 3-3

PVM-1 440QM/1 442QM/1 444QM
3-2. CONVERGENCE
(1) Horizontal and Vertical Static Convergence
Adjustment on the Center of Screen.
•Before starting, perform V. SIZE, V. CENT, H. SIZE,
H. CENT and Screen Distortion adjustment rightly.
(Static Convergence Adjustment)
1.Receive adot signal and Set CONTRAST to normal.
2. Adjust H. STAT VR to coincide red, green and
blue dots on the center of screen. (Horizontal
movement)
3. Adjust V. STAT magnet to coincide red, green and
blue dots on the center of screen. (Vertical
movement)
@When moving the V. STAT magnet counterclock-
wise.
RG
^0 B
the V. STAT magnet clockwise.
<6>
@When tilt the
B
t
R
&
V. STAT magnet and open or close.
If the red, green and blue dots do not coincide
on the center of screen with H. STAT VR, perform
adjustment using V. STAT at the same time while
tracking.
/Tilt the V. STAT magnet and adjust static con-\
\vergence to open or close the V. STAT magnet./
•When the V. STAT magnet is moved in the
direction of arrow ©and ©, red, green and blue
dots move as shown below.
©When moving the V. STAT Magnet open or close.
BO
-G~ty
RO
©
BO
G-O-
RO
I
i
If the red and green dots do not coincide with
blue dot, adjustment with BMC (6-poles) magnet.
•HMC and VMC correction for BMC (6-Poles)
magnet.
1. HMC (Horizontal Misconvergence) correction and
motion of the Electron Beam with the BMC (6-
poles) magnet.
HMC Correction (A) HMC Correction (B)
2. VMC (Vertical Misconvergence) correction and
motion of the Electron Beam with the BMC (6-
poles) magnet.
VMC Correction (A)
t-O R—OR
—°
r*C—OG
—OB—OB
VMC Correction (B)
c>d
rOR
G*
-O *
—OB
c
d
c=d
i—OR
—OG
™oB
purity magnet
BMC (6-poles) magnet
V. STAT
arn
-i23
by{
-13-

PVM-1 440QM/1 442QM/1 444QM
(2) Horizontal and Vertical Dynamic Convergence
Adjustment the environs of the Screen
(Dynamic Convergence Adjustment)
1. Loosen deflection yoke screw.
2. Remove deflection yoke spacers.
3. Move the deflection yoke for best convergence.
4. Tighten the deflection yoke screw.
5. Install the deflection yoke spacers.
OR
0-00
BGRBo
oG GO
OB RO
RGB
0-00
oo-o o—oo
RGB BGR
0o°.
i
*2$
0-00
RGB
OBRO
oGGO
OR BGR
0-00
BO
0-00 o-oo
BGRRGB
(3) Screen corner Convergence
a- d:screen-corner
misconvergence Os
)Affix apermalloy
,ass'y corresponding
bto the misconverged
areas.
3-3. FOCUS
1. Receive the broadcast.
2. CONTRAST Normal
3. Adjust RV707 so that the focus on the center
of screen becomes to the best.

:1
PVM-1 440QM/1 442QM/1 444QM
3-4. WHITE BALANCE
[Screen (G2) Voltage)
1. Receive adot signal with the pattern generator.
2. Switch over COLOR TEMP to 6500° K.
3. Using oscilloscope, adjust with RV1710 (SUB BRT)
on Vboard so that the green cathode voltage
against ground becomes 160 VDC.
4. Similarly, adjust with RV1704 (B BKG) and
RV1705 (R BKG) on Vboard so that the blue
and red cathode voltages become 160 VDC.
7. Adjust with the color analyzer the white balance.
8. Reset the luminance level of the pattern generator,
and adjust the white balance. (High light con-
dition.)
5.
Observing the screen, adjust with RV709 (SCREEN)
on C board so that the back ground of the dot
signal is bright dimly.
[White Balance)
1. Receive acolor-bar pattern signal with the pattern
generator, and to make black and white screen
by chroma switch off.
2. •BRIGHTNESS 50%
•CONTRAST Minimum
•CHROMA 50%
•DRIVE volume
(V BOARD) mechanical center
•BKG volume
(V BOARD) mechanical center
3. Adjust RV1710 (SUB BRIGHT) so that the blue
stripe portion on the color-bar pattern signal is
bright dimly.
color-bar pattern BL
-a
4. Receive an entirely white signal from the pattern
generator.
5. CONTRAST 70%
6. Using the luminance level meter, adjust the
luminance level of the pattern generator becomes
8Nit. (The condition the screen is bright dimly.)
-15 -

PVM-1 440QM/1 442QM/1 444QM
SECTION 4
SAFETY RELATED ADJUSTMENTS
CONFIRMATION WHEN REPLACING H.V.R
(High Voltage Resistor)
The following adjustment should be confirm the output
voltage when replacing HVR.
1.
Receive an entire white signal.
2.
•CONTRAST Maximum
•BRIGHTNESS Maximum
3. Connect adigital multimeter to the A-20 connector
side lead of R804.
4. Confirm the voltage is 14.1 ±1.0 VDC.
$KR500. CONFIRMATION METHOD (HOLDDOWN
CONFIRMATION) AND READJUSTMENTS
The following adjustments should always be performed
when replacing the following components.
IC501 ,Q503, Q504, Q505, Q506,
D509, D51 0. C505, C520, C524,
C525, C526. C527, C528, C529,
C530, C531 ,R500, R506, R516, •on Aboard
R51 7, R51 8, R519, R520. R521,
R522, R523, R524. R525, R526,
R528, R804, NL501, HVR
1.
Receive an entire white signal.
2.
•CONTRAST Maximum
•BRIGHTNESS Maximum
3. Connect adigital multimeter to the A-20 connector
side lead of R804.
4. Confirm the voltage is 14.1 ±1.0 VDC.
5. Receive adot signal.
6. Disconnect A-22 connector (ABL JIG) on Aboard
and connect an ammeter.
7. Adjust BRIGHTNESS and CONTRAST so that the
current is 70 ±30 uA.
8. Apply an external DC voltage gradually to the A-
2Q connector side lead of R804, and when the
voltage becomes 16.4 ±0.1 VDC, confirm the
HOLD-DOWN circuit operates immediately and
raster disappears.
9. With the same procedure of item 8, when the
voltage becomes 15.8 ±0.1 VDC, confirm the
HOLD-DOWN circuit doesn’t operate.
10. Receive an entire white signal.
11. Adjust with BRIGHTNESS and CONTRAST volumes
so that the current is 600 ±40 uA.
12. Apply DC voltage to the A-20 connector side lead
of R804, and when the voltage becomes 15.8 ±0.1
VDC, confirm the HOLD-DOWN circuit operates
immediately and raster disappears.
13. With the same procedure of item 8, when the
voltage becomes 15.2 ±0.1 VDC, confirm the
HOLD-DOWN circuit doesn’t operate.
14. When step 4to 13is not satisfied, readjustment
should be performed by altering the resistance
value of R500 0§9.
i
-16-

PVM-1 440QM/1 442QM/1 444QM
7

PVM-1 440QM/1 442QM/1 444QM
SECTION 5
CIRCUIT ADJUSTMENTS
5-1. ABOARD ADJUSTMENTS
-A BOARD (COMPONENT SIDE) -
HORIZONTAL OSCILLATION FREQUENCY
ADJUSTMENT (RV501)
1. Receive amonoscope signal.
2. Connect pin ©of IC501 to ground with 100 vF/
16 Velectrolytic capacitor.
3. Adjust RV501 so that the screen streaming
stops.
I
to :low to :suitable fo:high
white frame
White frame becomes
just to the right side.
6. V. BLK Adjustment (RV514)
(1) Adjust RV514 (V. BLK) so that the upper side
white frame of monoscope signal is not blanked.
HVBLK ADJUSTMENTS (RV510. RV512, RV513,
RV514)
1. Receive amonoscope signal.
2. Set U/S (Under Scan) switch to Under mode.
3. •CONTRAST Minimum
•BRIGHTNESS Maximum
4. Adjust RV510 (U. H. SIZE) so that the white frame
of monoscope signal becomes visible.
5. Adjust RV512 (Video Phase) so that the white
frame of monoscope signal becomes to the right
side just on the screen.
V. BLK Make not to blank the
upper side white frame
of monoscope signal.
-18-

1
For Service Manuals
maubitron services
8Cherry TVee Road CWnnor PVM-1 440QM/1 442QM/1 444QM
7. H. BLK Adjustment (RV513)
(1) Adjust with RV513 (H. BLK) so that the vertical
line of the white frame of monoscope signal is
blanked as following figure.
Make to blank the vertical line of the white frame
of monoscope signal.
8. Screen Phase Adjustment (RV512)
(1) Adjust RV512 (Video Phase) so as to equalize
the width of the white frame of monoscope signal
on both sides of screen right and left.
ABA=B
VERTICAL DEFLECTION PART ADJUSTMENTS
(RV506, RV507, RV508, RV511)
1. Receive amonoscope signal.
2. •CONTRAST 70%
•BRIGHTNESS 50%
3. Adjust RV506 (V. SIZE) so that the vertical size
of monoscope signal becomes 12 frames.
12 frames
4. Adjust RV508 (V. LIN) the vertical linearity.
5. Adjust RV507 (V. CENT) the vertical position.
6. Adjust RV506 (V. SIZE) so that the vertical size
of monoscope signal becomes 11.75 ±0.2 frames.
7. Set U/S (Under Scan) switch to Under mode.
8. Adjust with RV511 (U.V. SIZE) as follows.
Screen is not wane on the four corners.
HORIZONTAL DEFLECTION PART ADJUSTMENTS (RV502,
RV503, RV504, RV505, RV509, RV510, RV550)
1.Receive amonoscope signal.
2. •CONTRAST 70%
•BRIGHTNESS 50%
3. H. CENT Adjustment (RV502)
(1) Adjust RV502 (H. CENT) the horizontal position.
4.
H. SIZE Adjustment (RV503)
(1) Adjust RV503 (H. SIZE) the horizontal size.
5.
PIN AMP, PIN PHASE, V. ANG, BOW Adjustments
(RV505, RV504, RV509, RV550)
•PIN AMP (RV505)
-19 -

PVM-1 440QM/1 442QM/1 444QM
•PIN PHASE (RV504)
•V. ANG (RV550)
•BOW (RV509)
6. Adjust RV503 (H. SIZE) so that the horizontal
size becomes 15.75 ±0.2 frames.
7. Set U/S (Under Scan) switch to Under mode.
8. Adjust RV510 (U.H. SIZE) the Under H. SIZE as
follows.
effective screen
5. V. DELAY Adjustment (VR2)
(1) Connect an oscilloscope to pin ©of IC503.
(2) Adjust VR2 of IC503 to become 8.1 ±1.0 msec
as follows.
8.1 ±1.0 msec
ACC ADJUSTMENT (RV002)
1. Receive acolor-bar signal (EIA color-bar).
2. Connect an oscilloscope to the IC302 side lead
of C31 3.
3. Adjust RV002 so that the burst signal level
becomes 100 ±5 mVp-p.
i
HI!- 100 ±5 mVp-p
BYDEM LEVEL ADJUSTMENT (RV003)
6±3 mm 6±3 mm
HVDELAY ADJUSTMENT (VR1, VR2)
1. Receive amonoscope signal.
2. •CONTRAST 70%
•BRIGHTNESS 50%
3. Set H-V DELAY switch to DELAY mode.
4. H. DELAY Adjustment (VR1)
(1) Connect an oscilloscope to pm @(SYNC SEP)
and pin ©(H. SYNC) of IC503.
(2) Adjust VR1 of IC503 to become 41 ±1 Msec as
follows.
1. Receive acolor-bar signal (EIA 75% chroma color-
bar).
2. Connect an oscilloscope to TP42 (B-Y).
3. Adjust RV003 so that the BYwaveform becomes
0.75 Vp p.
RYDEM LEVEL ADJUSTMENT (RV004)
1. Receive acolor-bar signal (EIA 75% chroma color-
bar).
2. Connect an oscilloscope to TP41 (R-Y).
3. Adjust RV004 so that the R-Y waveform becomes
0.75 Vp p.