Philips FIMI FC 16N User manual

AN
V18754
.
SERVICE MANUAL
FIMI
HIGH RESOLUTION GRAPHICS MONITOR
FC 16N/FC 20N
BAUGLEICH: PHILIPS C16-N / C20-N
Schaltungsdienst Lange OHG
D-12277 Berlin
Tel.:[phone]

Technical
Operations
Manual
Philips
High
Resolution
Graphics
Monitors
Models
C16-N
and
C20-N

Table of Contents
Part I: Monitor Operations
1
Monitor
Overview
...cccccccosncscsessceserescnsssssssessssensesseesceseessssesecensssnscnsseosssseeee
Lod
1.1
Block
Diagram..........sccssssssssecsssssssssenssenscnssnonecssensasencocsnsssensaseosenseses
1-1
1.2
Monitor
Specifications
........sscssscsssspsessscssscnssnsenssssenseessenensenssenecences
1-3
2
Power
Supply
&
Degauss
Circuitry
......cc.sccnsssssnsecsnsscsssssnesssnscensosensveseee
S71
2.1
Power
Supply
.........sccoscscsssorsrssessessecessnssssenssessncsssncsssnssssncersneesnssnesess
2-1
2.2
CHOPPED
......snssccsscsscscecsssceserssesesessnessnsssanessnecensssessnnsnsseucssnesasecusenseanes
2-3
2.3
Degaussing
Circuit
......ccsscsscssrssssenssnssseseneseossscecsncsnssesseesens
sapnruren
2-6
3
Deflection
Board
.......c.scsscccecscsssesseessnssnssssssssessesssessessnscnssvesseseesensenssnesensee
J”
3.1
Horizontal
Deflection
...........sssscssssssssesscsscssscsescsenenensncnsenecscsssnsensess
3-1
3.2
ET
Stabilization
Circiiit
.........ssccscsssscscrsssssescsssrsesercerssenssnenonses
wee
7D
3.3
Vertical
Deflection
...........cssssscssssscssssssscsecsssesessensasenerensseeensecsnserseees
3-4
3.4
Auxiliary
Services
......scssscscsssssessnesesssnsssnsssnsensenssssonssossssseceneeanerneees
3-4
4
Video
Preamplifier
Board
......ssscssssssssssrsssenesenesssenssessncenssnsensensssecsosenees
4-1
4.1
Video
Preamplifiers..........scscsersssecsecseees
wuic
bia
sundae
Gatpesasispaanunisats
4-1
4.2
Synchronization
........csssscessersssessscssenceeesnssersnssencssstensarensnssernenssnsencnssees
4-2
5
Video
Output
Stages
(Socket
Board)
.......rcccsssscssecssscsecsssssnenscsesseseoneneee
5-1
5.1
Fimal
Video
Stage
.......s.sscsssssssssssscerecssssssessnsesensnenssecececsescescssanesrensnese
5-1
5.2
Black
Level
Adjustment
and
Individual
Beam
Limiting.............
5-1
5.3.
Flashover
Protection
.........0+s+0
svoscecaeananencnnennennsenncssnssssnnnnnneneecngte
5-1
6
Dynamic
Focus
Board
....-.-.serscsssscscssesccssereencencsessceresees
wee
21
Part
II:
Adjustment
Procedures
7
Equipment
Needed
for
Adjustments
.......cccessocsrsscsrssesesesenesnencanensenseoes
7-1
S
Synchromization
.........ccscscssrssenesecsceressovsresssserssqnenenensevassesensnsssssenansevecsorese
8-1
Q
EHT
Stabilization
.........cscssscscscssrsccsesnccerssensssserscsncensensosconsonsscsensccseesnsonses
9-1
10
Geometry
......ccsccccscccsseseresnseseneseessrnssserenssosssenesessessoeseesesneacansesacaesnsnssoooeees
10-1
11
Chromaticity
..........ccccscsecccscerssererecesersonosonsncoessssenessssesecnsecsssrecesssonsnononeaes
11-1
12
Focus
NOE
ATT
ST
ARAN
LE
RN
ICES
ETE
ETON
TOE
13
Troubleshooting
.....cc..csecccsssssseeccsssossssssssesersseseesssnesenssssnsecnsssanessnscseeseseseee
LI~
1
13.1
OWOTVIEW
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13-1
13D
TMGICATOTS
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ewes
tnnedanseedchishadesnesennnsaesoutered
13-1
Appendix
A:
Monitor
Diagrams
.......s--ssesssssessnssressenensssersenensseenenrensansnssosecsenses
A-1
Appendix
B:
Layout
Diagrams...
sinbstheatedsnsiaaaustaabeaiebennesteneeseiovcctabasectatarensuene
B-1

Preface
This
Technical
Operations
Manual
is
divided
into
three
major
parts:
e
PartI-
Monitor
Operations
e
Part
II
-
Adjustment
Procedures
e
Appendix
Part
I,
Chapters
1-6,
describes
the
major
components
of
the
monitor,
includ-
ing
a
monitor
overview
and
circuit
descriptions
for
each
of
the
major
com-
ponent
blocks.
Part
I,
Chapters
7-13,
provides
instructions
for
adjusting
the
monitor’s
con-
trols
and
includes
a
chapter
on
troubleshooting.
Appendix
A
presents
a
series
of
diagrams
describing
monitor
dimensions,
control
locations,
and
how
to
access
and
replace
monitor
component
boards.
epee
B
contains
layout
diagrams
for
the
monitor’s
five
component
boards.
Inserted
in
the
back
of
the
manual
is
a
monitor
circuit
diagram
which
is
referenced
throughout
the
document.

Table of Figures
MO mitor Block Dig or ares ccsesisicsccsuszvinsschanseccssesesassnssntesscccnaincnveooweves 1-2
Power Supply & Degauss Circuitry | Block Diagram ..........s00s00 2-2
Chopper Block Diagram ..........ssscscecssscscssesssossssssscessesesncecssscesceres 2-4
Deflection Board Circuit Diagram ..........sscssscssssscsssscssecscsceenseteeces 2-5
EHT Stabilization Circuit Diagram ...........sssscssssscsssssccsnsereseeceesese 3-3
Dynamic Focus Board Circuit Diagram ........ssssessseccsseseesseressees O° 1
Appendix A: Monitor Diagrams
A-1
A-2
A-3
A-4
A-5
A-6
A-7
A-8
A-9
A-10
A-11
A-12
Appendix B: Layout Diagrams
Monitor Mechanical Dimensions C16-N .......ssssscesscsssssssseesseseees A-1
Monitor Mechanical Dimensions C20-N .........ssscsccssssecececaseesees A-2
Removing the Pedestal CIG-N | ss.ccscocsosnseesssosscntoesessonbeciseseccencovsesoe A-3
Removing the Back Cover C16-N ......sssssssssssssssssssssssesesesererecseenees A-4
Removing the Back Cover C20-N ......esssscsssssssssscssosenecssececeeesoeseses A-5
Removing the Top Metal Cover C16-N & C20-N ou... esssesseeseee A-6
Top Accessible Controls C16-N & C20-N .....e.sssssscessceseescecsceenees A-7
Side and Back Controls C16-N & C20-N ....sececssssssseesscesseesseeseeees A-8
Replacing the Power Supply C16-N & C20-N ou... ssssssecsseccscesoeees A-9
Replacing the Video Preamplifier Board C16-N & C20-N ....A-10
Replacing the CRT Socket Board C16-N & C20-N ......eeseseeees A-11
Replacing the Deflection Board C16-N & C20-N .......ssesssoees A-12
Power Supply
Chopper Board
Deflection Board
Video Preamplifier Board
Socket Board
Insert: Monitor Circuit Diagram

1 Monitor Overview
The
C16-N
and
C20-N
are
high
resolution
color
monitors
specifically
designed
for
CAD/CAM
applications
to
display
graphic
and
alphanumeric
information
with
a
resolution
of
up
to
1280
x
1024
pixels.
The
monitors
are
in
a
plastic
cabinet
with
a
tilt/swivel
base.
1.1 Block Diagram
The
block
diagram
of
the
monitor
is
shown
in
Figure
1-1.
The
electronic
circuits
are
divided
among
the
following
blocks:
°- POWER SUPPLY and DEGAUSS CIRCUITRY
° DEFLECTION BOARD
e VIDEO PREAMPLIFIER BOARD
* CRTSOCKET BOARD
e DYNAMIC FOCUS BOARD (only for C20-N)
Each
of
the
blocks
are
described
in
Chapters
2
through
Chapter
6.

CONTROL DYNAMIC FOCUS
BOARD BOARD
(ONLY FOR C20M)
Figure
1-1.
Monitor
Block
Diagram
Boao
a
a
te
ee
1-2

1.2 Monitor Specifications
Refer
to
Appendix
A
for
dimensional
diagrams
for
the
C16-N
and
C20-N
monitors.
1.2.1 Picture Tube
M48KDB56 X 40 (20")
M38JFIJ37 X 31 (16")
e 16" and 20" high resolution color tube coil assembly
90° deflection angle
0.28
(16")
and
0.31
(20")
trio
dot
pitch
29 mm neck diameter
P22 phosphor, medium-short persistance
CIE
chromaticity
coordinates:
X;=0.618
Xg=0.280
Xp
=0.152
Yr=0.350
Yg=0.605
Yb
=
0.063
white
coordinates:
X=0.281
+/-
0.02
Y
=0.311
+/-
0.02
White
coordinates
are
measured
at
the
center
of
the
CRT
face
on
a
white
window
equal
to
25%
of
total
picture.
The
contrast
control
is
set
to
30
FL.
:
The
brightness
control
is
set
to
the
threshold
of
raster
extinction.
e Brightness
1.
Normal
intensity
mode:
30-35
FL
at
0.7Vpp
video
input
signal.
Brightness
is
measured
at
the
center
of
the
CRT
face
ona
white
window
equal
to
25%
of
total
picture
with
the
contrast
control
set
to
maximum
and
brightness
control
set
to
the
threshold
of
raster
extinction.
2.
Uniformity:
Maximum
variation
from
center
to
edge
is
<
or
=
40%
(monotonic).
Brightness
is
measured
on
a
full
white
page
with
brightness
control
set
to
the
threshold
of
raster
extinction
and
the
contrast
control
set
at
20
FL
at
the
screen’s
center.
Misconvergence: 0.15 in the center
0.35mm
within
a
circle
diameter
equal
to
the
image
height
0.45mm
in
the
corners
Color
purity:
No
color
impurity
for
each
of
the
R,G,B
colors
ae
ee
ae
ce
Re
ee
oe
ee
a
1-3

1-4
12.2 Deflection
Horizontal
Frequency
range:
48
to
64
kHz
Blanking
time:
>3.5
usec
>
Retrace
time:
2.8
usec
Vertical
Frequency
range:
50
to
120
Hz
Blanking time: 39 lines
Retrace
time:
550
usec
Synchronization
Composite
sync
on
green
(0.3Vpp)
75 ohm input impedance
Geometry
With
nominal
video
inputs
pincushion
barrel
trapezium
shall
fall
within
a
3mm
band
formed
by
two
concentric
rectangles.
Linearity
Difference
between
displayed
character
sizes:
a. worst case - Ey= 10%
b.
between
adjacent
characters
-
Ey=5%
[Ey
=
(max
size
-
min
size
/
max
size)
x
100]
|
Jitter, hum: not visible
1.2.3 Video
RGB
inputs:
75
ohm,
analog
with
sync
on
green
amplitudes:
video
pulse:
min
0.65V
-
max
0.75V
-
typical
0.7V
sync
pulse:
min
0.27V-
max
0.33V
-
typical
0.3V
Resolution:
up
to
1280
x
1024
Bandwidth:
110
MHz
(at
-3dB)
linear
Rise
and
fall
times:
<
or
=
5
nsec
Overshoot: max 8%

1.2.4 Power Supply
e
AC
input
Range
A
92-132V
Range
B
184-264V
Range
select
accessible
by
the
user
e
Mains
frequency:
47/63
Hz
e
Switching
frequency:
43
Hz
+/-2
Hz
e
In-rush
current
limitation:
50A/2
usec
e Max. consumption: 120W
1.2.5 Controls
e External:
Brightness,
Contrast,
Manual
Degauss,
and
Power
On/Off
e Internal:
H-PH:
Horizontal
Phase
V-Hold:
Vertical
Frequency
Height: Vertical Size
V-Cent:
Vertical
Shift
S-Pin:
East/West
Pincushion
V-Lin:
Vertical
Linearity
Width:
Horizontal
Size
4
H-Lin:
Horizontal
Linearity
H-Cent:
Horizontal
Shift
Serv:
Service
Switch
(collapsing
Vertical
Deflection)
Trap:
Trapezoidal
Corrections
1.2.6 Input Connectors
e Signals: BNC (75 ohm)
e AC power: CEE 22-6A
1.2.7 Safety
e
UL,CSA,
DHHS,
VDE,
PTB,
TUV
approved
1.2.8 EMI/RFI
e VDE0871/6.78 class B approved
FCC-15J
class
B
(approved
on
Philips
system)
1 5