Sony Multiscan CPD-1404S User manual

•
SERVICE MANUAL
REVISED
•• 11
---
MICROFILM
Computer display
Picture tube
Viewable pixels
Scanning frequency
Video input signal
Sync input
Power requirements
AEP Model
UK Model
Chassis No. SCC-040B-A
Australian Model
Chassis No. SCC-040C-A
Multiscan
SPECI FICATIONS
Direct-driven monitor
Super Fine Pitch Trinitron colour tube
14 inch (13
V) picture tube measured diagonally
90 degree deflection
Anti-glaring dark screen
Useful screen 274
mm x 207 mm
Phosphor P22
0.25 mm Aperture Grille pitch
1024 x 768
Vertical sync signal frequency:
55
-100Hz
Horizontal sync signal frequency:
28 -57kHz
Analog
RG8 positive
0.714 Vp-pl75n terminated
TIL level. Polarity free.
Composite sync is acceptable at Pin #
8.
Sync on green is acceptable.
100-120 V/220-240 V AC,
50 - 60 Hz, 1,8 -1,0 A
- Continued on next page -
MUlTISCAN®
COLOUR. COMPUTER DISPlAYs-
SONY:·

CPD-1404S
Dimensions
..
c p
..,
-
-
I.
240 mm
348 mm
Weight
355 x 348 x
411 mm (w/h/d) .
(14 x133 /4 x16
1
/a inches)
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E
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lO
M
E
E +
~I
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f
I.
13.1 kg (29.1 Ib)
Including the tilt-swivel
1"\
~ III"
TTTIT
Iv III"
,iITn
y
I
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I
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238 mm
411 mm
Supplied accessory AC power cord (1)
Design and specifications subject to change without notice.
WARNING
To prevent fire or shock hazard, do not expose the unit to
rain or moisture.
Dangerously high voltage is presentinsidethe unit. Do not
open the cabinet. Refer servicing to qualified personnel
only.
FOR CUSTOMERS IN THE UNIT.ED KINGDOM
WARNING----------------------------------~
THIS APPARATUS MUST BE EARTHED
IMPORTANT
The wires in this mains lead arecoloured in accordancewiththe following
code:
Green-and-yellow: Earth
Blue Neutral
Brown Live
As the colours of the wires
in the mains lead of this apparatus may not
correspond with the coloured markings identifying the terminals
in your
plug proceed as follows:
The wire which is coloured green-and-yellow must be connected to the
terminal
in the plug which is marked by the letter E orby the safety earth
symbol ... or coloured green or green-and-yellow. The wire which is
colouredblue mustbeconnectedto theterminal which is markedwith the
letter N or coloured black. The wire which is coloured brown must be
connected to the terminal which is marked with the letter L or coloured
red.
--2--
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I CPD-1404S '_
TABLE OF CONTENTS
Section Title -Section Title
1. GENERAL
4. SAFETY RELATED ADJUSTMENT···········............... 16
1-1. Location and Function of Controls........· .. ·..........·......· 4
1-2. Connections···········································................. 5
5. CIRCUIT ADJUSTMENTS
1-3. Use of the Tilt·Swivel···········································... 6 5-1. DA(DC··I) Board Adjustment
.. ·································· 19
1-4. Timing Chart·························································· 7 5-2. D
and DA(OC-l) Board Adjustments ......................... 20
2. DISASSEMBLY
6. DIAGRAMS
2-1. Tilt
and Cabinet Removal .. ········································ 8
2-2. DA(DC-I) Board Removal·····································
.. 8 6-1. Circuit Boards Location
.. ·································· .. ······ 23
6-2. Schematic Diagrams and Printed Wiring Boards·........... 23
2-3. Chassis and B Block Assembly Removal· .. ·· ................. 9 Frame Schematic Diagram······............................
24
2-4. D Board Removal· .. ······· .. ········································ 10
DA(OC-l) Board·············································· 26
2-5. Picture Tube Removal········...................................... 10
D Board···························································33
B Board···························································40
3. SET-UP ADJUSTMENTS 6-3. Semiconductors·......................................................
45
3-1. Beam Landing························································ 11
3-2. Convergence···········································................ 12
7. EXPLODED ViEWS·················································· 47
3-3. Focus Adjustment···············..................................... 15
3-4. White Balance····························............................ 15
8. ELECTRICAL PARTS LIST '" ................................... 48
3-5. Bright Controllable Confirmation ............................... 15
NOTE. Parts Difference
AEP
UK
AUS
Serial No. 5,000,001 to 5,008,000
BEZEL ASS'Y (X-4029-894-1)
(No include AERIAL ASSY)
without CANCEL COIL ASS'Y
Serial No. 5,800,001 and later
with BEZEL ASS'Y (X-4029.894-3)
with CANCEL COIL ASS'Y (1-941-843-19)
Serial
No. 5,008,001 and later
BEZEL ASS'Y (X-4029-894-3)
(include AERIAL ASSY)
with CANCEL COIL ASS'Y
( 1-941-843-19)
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
PUBLISHE'D BY SONY. CIRCUIT ADJUSTMENTS
THAT ARE CRITICAL TO SAFE OPERATION ARE
IDENTIFIED IN THIS MANUAL. FOLLOW THESE PRO·
CEDURES WHENEVER CRITICAL COMPON-ENl'S ARE
REPLACED OR IMPROPER OPERATION IS SUSPECTED.
-3-
:"''""':'''''''; "
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CPD-1404S
.--------------~
SECTION 1
GENERAL
1-1. LOCATION AND FUNCTION OF CONTROLS
"r;=======;-.
=
.,
-r
-w
'-
III POWER switch and indicator
To turn on the powerof the unit, press this switch. The indicator will light
up. To turn off the unit, press it again.
rn CONTRAST control ())
Turn clockwise to increase contrast, or counterclockwise to decrease
contrast.
rn BRIGHTNESS control (0)
Turnclockwiseforabrighterdisplay ,orturn counterclockwiseforadarker
display.
~ AC IN connector
Connect to an AC outlet with the supplied AC power cord.
Ullilli
1111
I~
Jllllli
'1111 ~
c :
I. r
ill:. ..........
I
-4-
Colour monitor cable
'/
\
~
,
J
]
Three-row D-sub 15 pin
RGB input connector
•
•
•
•

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I CPD-1404S
[i] AUTO SIZE switch
Depending on the microcomputer connected to the display, set this
switch to the appropriate position.
LOCK: For the IBM PS/2 microcomputer using the VGA mode.
When this switch is set to LOCK, the timing
is automatically
adjusted to the VGA mode, and the H SIZE, H SHIFT, V SIZE
and V CENT controls will have no effect.
ADJ: For other microcomputers having analog RGB output.
When this switch is setto ADJ, adjustthe displaywith the H SIZE,
H SHIFT, V SIZE and V CENT controls.
[ID H SIZE (horizontal size) control
Turn this control to adjust the horizontal size of the display.
rn H SHIFT (horizontal shift) control
Turn this control to adjust the centre of the display horizontally.
00 V SIZE (vertical size) control
Turn this control to adjust the vertical size of the display.
00 V CENT (vertical center) control
Turn this control to adjust the centre of the display vertically.
1-2. CONNECTIONS
Connect the power cord and the monitor cable.
Be sure to turn the power of the unit off before making the connection.
Rear of the CPD-1404S
"'-'=====
Microcomputer AC power cord
(supplied)
t~!~i~~~
---c::iIld
toAC IN
to RGB OUT
Three-row O-sub 15 pin (male)
Colour monitor cable
1 Align the plug with the receptacle. 2Plug
in and tighten the
screws by hand.
To disconnect the plug, loosen the screws.
-5-
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'1 ,!~' ... 1- ~~"
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2 3 4 5
0
0000
RGB Input Pin Assignment
6 0 0 0 0 010
00000
11
I 1 I 2 3 4 5
G~D I
G~D I
R G B GND GND
I G~D I
G~D I 12 IH
~:Ncl V ~:Ncl
15
1-3. USE OF THE TILT-SWIVEL
With thetilt-swivel, this unitcan be adjustedto be viewed atyourdesired angle
within 90° horizontally and 13° vertically.
To turn the unit horizontally, hold it at its bottom with both hands as illustrated
below.
-6-
15
G~DI
9
•
•
•
".'

-----'
1-4. TIMING CHART
The following timing chart shows approximate values.
MONITOR ACCEPTABLE TIMING EXAMPLE
___ ... 1VIDEO
1 I
I I
I I
Ui ! U
SYNC
1 ,I ACTIVE I 1 1
BACK PORCH(B. P) ---jl--l~_· -i .. e---
P
-E -R -1
O-D--<~~I I '
1---' ----.:-=:..:==---- .. ~.j...1 -1;-. .. ..- SY NC
," I I
1Il VGA [Il 1024 x 768 interlace (fh = 35.52 kHzJb _;:1 . '/
1 2 3 FREO. H (kHz)
FREO. H (kHz) 31.47 31.47 31.47 V (Hz)
V (Hz)
70.1 70.1
59.9 H PERIOD (IlS)
H PERIOD (IlS) 31.78
SYNC 3.81
~ ~
B.P
1.91
ACTIVE 25.42
V PERIOD (H) 449 449 525
SYNC 2 2
'2
B.P 34 59 32
ACTIVE 400 350 480
SYNC POLAR-
H NEGA
pas I NEGA
ITY
V
pas I NEGA NEGA
CLOCK FREO. (MHz) 25.175 25.175 25.175
W, [Il: When the AUTO SIZE SW is in the locked position. picture size is
automatically adjusted for the above listed video modes (W. [Il).
All sizing controls on the left side of the monitor are therefore
ineffective.
To adjust sizing for other video modes, change
the SW to ADJ and
adjust the controls.
SYNC
B.P
ACTIVE
V PERIOD (H)
SYNC
B.P
ACTIVE
SYNC
POLARITY
H
V
CLOCK FREQ. (MHz)
[1] 35 kHz non-interlace (example)
800 x 600
@] 48 kHz non-interlace (example)
1024 x 768
FREO. H (kHz) 35.16
V (Hz) 56.0
H PERIOD (IlS) 28.44
SYNC 3.11
FREO. H (kHz)
V (Hz)
H PERIOD (IlS)
SYNC
B.P
B.P 2.67
ACTIVE 22.22
V PERIOD (H) 628
SYNC 14
ACTIVE
V PERIOD (H)
SYNC
B.P 7 B.P
[1], @]: SYNC POLARITY FREE
ACTIVE 600
CLOCK FREQ. (MHz) 36.000
, ACTIVE
CLOCK FREQ. (MHz)
-7-
3',
f'.
1 "
2~
'j
1
22
4(/
"'
, ,
20/2' ,
, ,
"
POSI
POSI
44,~
1'/,
48.
19
1
60.0!
20.75i
1.00 1
2.75i
16.00:
803!
4
28.
768~
64.000;
.-
.. ~......:-:.

: .~:.:.. .
CPD-1404S
SECTION 2
DISASSEMBLY
2-1. TILT AND CABINET REMOVAL
2-2. DA (DC-1) BOARD REMOVAL
® two screws
<D two connectors
@ Remove the DA (DC-1) board in the arrow direction
® five screws (VBTP4 x 16)
@ Remove the cabinet in the arrow © direction.
CD Remove the tilt in the arrow <B> direction while
push two claws.
p
I
® two screws ( + PSW3 x 8)
-8-
•
•
•
•

2-3. CHASSIS AND B BLOCK ASSEMBLY REMOVAL
@ Pull out the SA block assembly in the arrow
direction
P505 1
@ six connectors
(P50'. P504 -P506. P508 P509) ~
~ ~) :>
@ Remove the chassis in the arrow ® direction while
push two claws in the arrow <El> direction.
~ .~~:J _
'; , " - ,.
I I)"
'i ; />l P508
"7~
W-.::
I I ~P509
~ P506
I
P50' \.1
P504 jI'~ I
<D ",.w, (+ PSW4 x 1 0) ~
~ Loo,," tho ,,'Ow ~
\!j~~
@ screw
@ connector
® anode cap
(+ BVTP4 x 8)
-9-
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'.' . . . · .' .. .. ~*ijlis;WMiWtrictiRtfidHfL
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CPD-1404S
j "
2-4. D BOARD REMOVAL 2-5. PICTURE TUBE REMOVAL
(J) Remove the 0 board
the two
claws
the arrow ®
(+ PSW3 x 8)
tube
• REMOVAL OF ANODE-CAP
• REMOVING PROCEDURES
CD Turn up one side of the rubber cap in the
direction indicated
by the arrow ®.
• HOW TO HANDLE AN ANODE-CAP
CD Don't hurt the surface of anode-caps
with sharp shaped material!
~ Don't press the rubber hardly not to hurt
inside of anode-caps!
A metal fining called
as shaner-hook
terminal is built in the rubber.
@ Don't turn the foot of rubber over hardly!
The shaner·hook terminal will stick out
or hurt the rubber.
@ picture tube
@ Using a thumb pull up the rubber cap
firmly in the direction indicated by the
arrow@.
-10-
Anode bunon
@ When one side of the rubber cap is
separated from the anode bunon, the
anode-cap can
be removed by turning
up the rubber cap and pulling up it in the
direction of the arrow © .
•
•
•
•

SECTION 3
SET-UP ADJUSTMENT
• The following adjustments should be made when
a complete realignment is reQtJifed or a new 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········· 8096
BRIGHTNESS control ....... 5096
Preparation
• Face the PICTURE TUBE to east or west so as
not to be influenced by magnetic force.
• Turn ON the POWER switch. and degauss the
entire screen with degausser.
3-1. BEAM LANDING
1. Receive a signal of 480 LINE (fH=31 kHz) with
signal generater.
2.
Adjust the white balance. convergence and focus
coarsely. and then set purity controls to centre
position
as shown in Fig. 3 - 1.
3. Switch over the signal generater
to green.
4. Move the deflection yoke backward. and adjust
purity magnet so that the green on the screen
to become in the centre of screen as shown in
Fig.
3-2.
5. Move the deflection yoke foward. and adjust with
so that the entire screen to become green entirely.
6. Switch over the signal to blue and green. and
confirm the condition.
7. When landing at the corners is not right. correct
by using the magnet (Fig. 3 - 3).
<ll@ purity
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.
• Signal generator: VG807. VG809 ... etc
(Astro Design)
• Colour Annalyzer
• Degausser
Fig.
3-1
Fig. 3-2
Fig. 3-3
-11-
purity control
Disk magnets or
rotatable disk
magnets correct
these
area (a-d).
.-
DC
II
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~

CPD-1404S
3-2. CONVERGENCE
(1) Horizontal and Vertical Static Convergence
Adjustment on the Centre of Screen.
• Before starting. perform V. SIZE. V. CENT, H. SIZE.
H. CENT and Screen Distortion adjustment rightly.
(Static Convergence Adjustment)
1. Receive a dot signal and Set CONTRAST to normal.
2. Adjust H. STAT VR to coincide red. green and
blue dots on the centre of screen. (Horizontal
movement)
3. Adjust V. STAT magnet to coincide red. green and
blue dots on the centre of screen. (Vertical
movement)
V. STAT Magnet
* If the red, green and blue dots do not coincide
on the centre
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.
CD
When
IT1Qving
the V. STAT
Magnet open or close.
® @
I '\
-4+-~f,-
R I R I
~ When
moving
the V. STAT magnet counterclock-
wise.
~
I
R G B
~i~
@ When moving
the
V. STAT magnet clockwise.
@ When tilt the V. STAT magnet and open or close.
* 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)
-12-
a<b R G B
00 0
U-J
a b
R "'G B
a=b 0 0 0
~
a b
a>b R G B
o 00
l-LJ
a b
R "G B
a=b 0 0 0
t.......L-.l
a b
•
•
•
•
•••

2. VMC (Vertical Misconvergenc_e) correction and
motion of the Electron Beam with the BMC (6-
poles) magnet.
VMC Correction (A) VMC Correction (B)
*+
c<d c=d
c>d c=d
cSR cEO R
o *' OG
d G d
BOB
gR
ER
C G C
*' G
d
d B B
CD Adjust the Y axis cross misconvergence.
VR, Lower section correction
VRz Upper section correction
-+-
BGR
RGB
-+-
Surface of Picture Tube
".;' .•• -I .. .j-::....:'!;·.~
-13-
®H.TIL T adjustment
RGB
BGR RGB
~+- ~+-
Operation
(taking out
and putting
in)
Correction board
Operation
(taking out
and putting
in)
Adjust so that the order of R. G, B is the same
on both the right and left sides.
@Adjust the X axis cross misconvergence.
Surface of Picture Tube
""..{...._-H-j--XCV coil
Adjust so that the crosses of Rand B disappear.
09
51:
'RC
)6
33
IV
l2

::;, " .... ' ..
CPD-1404S
(2) Horizontal and Vertical -Dynamic Convergenca
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.
0-0-<:>
R G B
0-0-0 f--------
B G R
(3) Screen-corner Convergence
a- d : screen-corner
misconvergence
~!
0-0-0
B G R
R G B
0-0-0
0-0-0
R G B
B G R
0-0-0
~~
-14-
r----------~ 0-0-0
RV506 R-BIAS B G R
RV505
B-BIAS
RVS01 ACL
RVS09 H. STAT
RVS10 G-BIAS
a
if
0-0-<:5
R G B
Affix a permalloy
ass'y corresponding
to the misconverged
areas.
o 0
o
•
•
•
·e·

3-3. FOCUS ADJUSTMENT
1. Turn the signal to 1024 x 768 (f
H =
48kHz).
2. Receive a dot signal.
3. Adjust FOCUS VR so that the following figure
point for best focus.
70 mm
Ur---+---
50 mm
-'----+----t
3-4. WHITE BALANCE
Check that the size. position. distortion, and convergence
have been adjusted. and
that aging has been carried
out for more than thirty minutes.
1. Receive the VGA GRAPHICS MODE (fH = 31.
5 kHz,
480 LINE).
2. Set the VRs as follows.
BRT
RV205
CENT
CaNT
RV204
MAX
SUB-CaNT
RV502
CENT
SUB·BRT RV511 CENT
R·DRIVE
RV504
CENT
B-DRIBE
RV503
CENT
R-BIAS
RV506
MIN
G-BIAS
RV510
MIN
B·BIAS
RV505
MIN
ACL
RV501
MAX
3. Check that the size is as specified. After checking,
change
the VIDEO to a non signal.
Horizontal
240 mm
Vertical
180 mm
4. Use the
SCREEN VR (attached to the FOCUS
PACK) to display raster.
Use R.G,B-BIAS VR to adjust any 1 ch VR to
MIN. and adjust so that it becomes almost white
ex = 0.283, Y = 0.298 approx. ± 0.05).
5.. Use the SCREEN VR to adjust the raster to
CUT-OFF.
6. Receive the VGA 31.5 kHz, 480 LINE. VIDEO
0.714 Vp-p ± 0.002.
7. Receive the white 6 % output image rate. adjust
the R. B-DRIVE VR so that the white balance
becO,mes X = 0.283. Y = 0.298 and adjust the
SUB-CaNT VR so that the luminance becomes
130 nit.
"''''''''_''1
1
,,'
, '\
•• !II.I~t ,
CPD-1404S
8. Adjust the CONTRAST VR to MIN. and obtain
the white balance at luminance 10 nit using
R. G, B-BIAS VR.
X =
0.283. Y = 0.298
(Decrease it using the BRIGHT VR if luminance
10 nit cannot be obtained.)
9. Repeat steps 7 to 8. and obtain the white balances
at 130 nit and 10 nit.
10. Receive the VIDEO non-signal. check that the
raster is CUT-OFF with BRT CENTRE, CaNT
MAX.
11. Receive the all white signal (VGA 31.5 Hz,
480 LINE), and adjust ACL VR (RV501) so
that the luminance becomes 120 ± 12 at both
BRT
MAX and CaNT MAX.
3-5. BRIGHT CONTROLLABLE
CONFIRMATION
1. Input a signal of 480 LINE (fH=31 kHz. entire-
white. 0.714 Vp-p).
2. CONTRAST control
.. ....... maximum
3. Confirm the variation
of luminance signal when
controlling BRIGHT volume as follows.
-15-
1) Confirm the difference of luminance signal on
maximum position
as compared with the centre
click position
is more than +10 NIT.
2) Confirm the difference of luminance signal on
minimum position
as compared with the centre
click position
is less than -10 NIT,
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SECTION 4
SAFETY RELATED ADJUSTMENT
8RV402, HV REGULATER. HV HOLD-DOWN AND BEAM
LIMIT CIRCUIT CONFIRMATION
When replacing the following components (marked with
~ on the schematic diagram), make this confirmation.
o BOARO················IC901. IC902. IC401, 0930, C408,
DA (OC·l)
C409, C410, C412, C414, C415. C422.
C424, R41 4, R434, R435, L406,
T402 (FBT). T901, RV402,
DY (Deflection Yoke)
BOARO ............· .. IC101, IC301, 0303, R327, R388
1. HV REGULATER CIRCUIT CONFIRMATION
1) Receive a signal of fH = 48kHz
2) Set the CONT and BRIGHT controls to minimum.
(Cut·Off condition).
3) Connect a digital multimeter to pin (g) of P402
on 0 board.
4) Confirm the voltage is less than 6.48V ~C.
5) If step 4) is not satisfied, adjust them with
RV402.
2. HV. HOL~-~OWN CIRCUIT CONFIRMATION
1) Receive a signal of fH = 48kHz.
2) Set the CONT and BRIGHT controls to minimum.
(Cut·Off Condition).
3) Apply an external DC voltage gradually to pin
(g) of P402 on 0 board, confirm that the minimum
voltage is less than 7.40 V DC where by the
HOLO·OOWN circuit operates immediately and
raster disappears.
3. BEAM
LIMITER CIRCUIT CONFIRMATION
1) Receive a signal of fH = 48kHz.
2) Adjust CONT and BRIGHT controls so that the
screen
luminance to become 100 NIT.
CONT control .......... maximum
BRIGHT control· ...... centre
3) Connect a digital multimeter to pin CD of P402
on 0 board.
4) Confirm that the voltage is - 2.80 ± 1 .00 V DC
5) Apply an external DC voltage gradually to pin
CD of P402 on 0 board, and when the voltage
becomes more than -11.30V, confirm the BEAM·
LIMITER circuit operates and raster disappers.
NOTE: After adjustment, cover on 8 RV402
with seal cap as follows.
CD Insert in seal cap with RTV (silicone) as follows.
CAP
seal cap (3-710-578-01)
RTV (KE-490, 7-322-065-19)
(g) Cover the seal cap on RV402, and make paste together
silicone and
printed board.
8
WARNING:
IF RV 402 (sealed variable resistor) replacement
is required, federal require
that after adjustment the
control is to be sealed so no further adjustment
can be made to this resistor.
loVp CIRCUIT CONFIRMATIONI
When replacing following components, perform this
confirmation.
D BOARD....· .. · 0901, R922, R923, 0927. 0928. 0929
1. Turn OFF the POWER switch.
2. Remove P903 and P904 connectors from 0 board.
3.
Apply an external DC voltage of less than 216.00
V DC (SET UP THE CURRENT LIMITER TO 0.2
A) to pin ® of P903 on 0 board for two second.
4.
At the moment (item 3), confirm the OVP circuit
operates immediately and an external DC voltage
is drop by limiter operation.
5. If OVP circuit is not operate, check up 0901, R913,
R914 and L906.
-16-
.-
•
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. CPD-1404S
digital
multimeter
regulated-de
power supply
DO
digital
regulated·de
power supply
DO
1
-
·-
-
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f CPD-1404S
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SECTION 5
CIRCUIT ADJUSTMENTS
.
VGA 1
VGA2
HORIZONTAL KHz
31.47 31.47
FREQUENCY VERTICAL
Hz
70.1
70.1
T1
\..IS 31.78 31.78
T2 \..IS
3.81
3.81
HORIZONTAL T3 \..IS
1.91 1.91
T4 \..IS 25.42 25.42
T1
H
449 449
T2 H 2 2
VERTICAL T3 H 60
35
T4
H
350
400
SYNC HORIZONTAL
POSITIVE
NEGATIVE
POLARITY VERTICAL NEGATIVE
POSITIVE
CLOCK
MHz 25.175 25.175
RESOLUTION H x V
640 x 350
720 x 400
VGA3
8514
31.47 35.5
59.94 86.96
31.78 28.15
3.81
3.92
1.91
1.25
25.42 22.81
525
408.5
2 4
33
20.5
480
384
NEGATIVE
POSITIVE
NEGATIVE
POSITIVE
25.175 44.900
640 x 480
1024 x 768
MODE
NO INTERLACE
NO INTERLACE
NO INTERLACE INTERLACE
T1: PERIODE, T2: SYNC, T3: BACK PORCH, T4: ACTIVE
Mac"
48KHz 57KHz
HORIZONT AL KHz
35.01
48.78 56.476
FREQUENCY VERTICAL
Hz
66.7 60 70.069
T1
\..IS
28.56 20.5 17.707
T2 \..IS 2.12 1.5 1.813
HORIZONTAL T3 \..IS 3.16 2.0 1.920
T4 \..IS 21.16 16.0 13.653
T1 H 525 813 806
T2 H 3 3 6
VERTICAL T3 H 39 39 29
T4 H 480 768 768
SYNC HORIZONTAL POSITIVE/NEGATIVE
NEGATIVE NEGATIVE
POLARITY VERTICAL POSITIVE/NEGATIVE
NEGATIVE
NEGATIVE
CLOCK
MHz
30.25 64.000 75.000
RESOLUTION H x V 640 x 480 1024 x 768 1024 x 768
. MODE NO INTERLACE NO INTERtACE
NO INTERLACE
T1: PERI ODE, T2: SYNC, T3: BACK PORCH, T4: ACTIVE
-18-
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. CPD-1404S
5-1. DA (DC-1) BOARD ADJU$TMENT
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
DA (DC-1) VR POSITION
1 2 3 4 5 6 7 6 9 10
11 12
,. ....
000000
000000
~--.;
1"---.
1. •• .1
,.-- .. ,.-- ..
t_ . ..i 1. ... ..1'
22 23
............ _..._ ............................... .
· .
· .
· .
Adjustment
SIDE PIN
(L)
SIDE PIN
(H)
PARA
CORE
PIN PHASE
PIN UP
PIN SAL
HORIZONTAL
POSITION
(L)
HORIZONTAL SIZE
(L)
VERTICAL SIZE
(L
I)
VERTICAL SIZE
(L
2)
VERTICAL SIZE (G)
VERTICAL POSITION
HORIZONTAL POSITION
(M)
HORIZONTAL SIZE
(M)
VERTICAL SIZE
(M)
User
VR setting
(1)
User VR setting (2)
User
VR H size maximum value setting
20V setting
Fo setting (FH = Max)
Fo setting (FH = Min deviation correction)
F-V conversion voltage setting (6V during
' Frequency setting
of relay switchover signal
16
000
o
13 14 15
17
o
16
o
................ - ........................ __ .. .
· .
· .
· .
Reference
Settings during VGA
switch locked
RV307
RV310
RV308
RV309
RV313
RV311
RV304 (LOCK)
RV306 (LOCK)
RV252 480
LINE (LOCK)
RV253 400
LINE (LOCK)
RV254 350
LINE (LOCK)
RV255
RV303 during receiving 8514 (LOCK)
RV305 during receiving 8514 (LOCK)
RV251
during receiving 8514 CLOCK)
RV257
RV256
RV312
RV314
(*)
RV301
RV302
FH = Max)
RV601 C*)
(40 kHz)
RV602 (*)
.
( * ) indicate DA (DC-1) board manufacturer adjustment
-19-
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02

CPD-1404S
IH fo ADJUSTMENT (RV30 1. RV3_02) I
(57 kHz)
1. Receive a signal of 57 kHz.
2. Short circuit between pin
CD and pin @ of TP301
with a jumper wire.
3. Connect a frequency counter across collector of
0402 and ground.
4.
Adjust RV301 (FH MIN) 31.47 Hz ± 500 Hz
on
the frequency counter.
(31 kHz)
1. Receive a signal
of 31 kHz.
2. Short circuit between pin
CD and pin @ of TP301
with a jumper wire.
3. Connect a frequency counter across collector
of
0402 and ground.
4.
Adjust RV302 (FH MIN) for 31.47 kHz ±500
Hz on the frequency counter.
5-2. D AND DA (DC-1) BOARD ADJUSTMENT
o
RV40,
!H-POS']
D board
RV404 RV203
!H-sHIFTI Iv-posil
IH. POSITION (RV401. SW401) I
RVZOI
!V-LINE]
~
1. Input a cross·hatch signal of 48 kHz.
RV20~
!aRIGHTI
2. Display a back·raster on the screen with G2
YR.
3. Adjust RV401 (H. POSI) so that the back-raster
position
to come centre.
4. In case of the back·raster is not move till centre.
using SW401 (H.
pas I TAP SW).
Iv. LINE. V. SIZE. V. POSI (RV201. RV202. RV203) I
, . Input a cross·hatch signal of 48 kHz.
2. Adjust RV203
(V. POSI) so that the vertical
position
to come centre.
3. Adjust vertical linearity with RV201 (V. LINE).
4. Adjust vertical size
with RV202 (V. SIZE).
I H. SIZE. LIMITER (RV403. RV31 2) I
1. Input a cross-hatch signal of 48 kHz.
2. Rotate RV403
(H. SIZE) from maximum to
minimum. and then observe the local strain.
3. In case
of a local strain occuring on the screen.
adjust them with RV312 (H. S LIMIT) on DA
(DC-1) board.
4. Input a cross-hatch signal
of 31 kHz (48 LINE).
5. Switch over AUTO
SIZE SW to ADJ position.
6. Turn RV403 (H.
SIZE) from maximum to minimum.
and then observe the local strain.
7.
In case of a local strain occuring on the screen.
adjust them with RV312 (H. S LIMIT) on DA
(DC-') board.
148 kHz. DEFLECTION SYSTEM ADJUSTMENTI
* Input a cross-hatch signal of 48 kHz as following
adjustment.
-20-
• H. SIZE (RV403)
Adjust RV403 (H. SIZE) on 0 board so that the
horizontal size
to become 240 ± 2.0mm.
t
180 ± 1.5mm
•
__ 240 ± 2.0mm --
• PARA CORE (RV308)
Adjust direct association and parallelogram strain
with RV308 (PARA CORE) on DA (DC-1)
board.
•. -
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