Samsung MP5671 User manual

II
SERVICE MANUAL
15" FULL PAGE MONITOR
MODEL NO: MP5671
c8SAMSUNG

CONTENTS
• IMPORTANT NOTICE FOR SERVICE PERSONNEL BEFORE SERVICING ........................ 3
• SAFETY PRECAUTION ........................................................... 3
• THEORY OF OPERATION ......................................................... 4
• POWER CONFIGURATION AND AC POWER INPUT MODE SELECTION. . . . . . . . . . . . . . . . . . . . . . .. 5
• SPECiFiCATIONS ............................................................... 6
• ADJUSTMENT METHOD ......................................................... 9
• MAJOR OPERATING COMPONENTS .................................................. 10
• BLOCK
DIAGRAM .............................................................. 11
• TROUBLE SHOOTING ............................................................ 13
• CIRCUIT DIAGRAM DISPLAY SYMBOLS .............................................. 19
• RMS MEASUREMENT RESULTS OF THE IC'S .......................................... 19
• WAVEFORMS ................................................................. 20
• SCHEMATIC
DIAGRAM .......................................................... 21
• WIRING AND CONTROL LOCATION DIAGRAM ........................................ 23
• CONNECTOR ANDWIRING ..................................................... , . 25
• PC BOARDS .................................................................. 26
• EXPLODED-VI EW ....................... '.' ..................................... 30
• REPLACEMENT PARTS LIST
...................................................... 32
2

• IMPORTANT NOTICE FOR SERVICE PERSONNEL BEFORE SERVICING
PLEASE READ BEFORE ATTEMPTING SERVICE
1. Line voltage must be kept within ±10% of the rated
voltage.
2. When operating at line voltage, confirm the DC
voltage at GT4 is 75V ± 0.5V (Adjust VR603).
3. DO NOT DISCHARGE, ARC, OR MEASURE HIGH
VOLTAGE WHEN HIGH VOLTAGE LEAD IS CON-
NECTED TO CRT. DISCHARGE 2ND ANODE
OF
CRT ONLY AFTER HIGH VOLTAGE LEAD HAS
BEEN DISCONNECTED. DO NOT DISCHARGE
HIGH
VOLTAGE LEAD AT ANY TIME, DAMAGE
TO COMPONENTS MAY RESULT.
4. While the monitor is in operation, do not attempt to
connect or disconnect any wires.
5. Disconnect all power before attempting any repairs.
6. When the power is on, do not attempt to short any
portion
of the circuit. This shorting may cause
damage to the components of the circuits.
• SAFETY PRECAUTION
WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this unit. The
following precautions are necessary during servicing.
1. Some parts such as a picture tube in this unit have
special safety-related characteristics for X-RAY
RADIATION protection. For continued safety, the
parts replacement should
be undertaken referring to
item 2 below.
2. Many electrical and mechanical parts in this unit have
special safety-related characteristics for protection
against shock hazard, fire hazard and others.
These
characteristics are often passe9 unnoticed by a visual
inspection and the protection afforded by them
cannot necessarily
be obtained by using replacement
components rated
for higher voltage wattage, etc.
Replacement parts which
have these special safety
characteristics
are identified in this manual and its
supplements
by shading on the schematic diagram
and the parts list. Before replacing any
of these com-
ponents, read the parts list in this manual carefully.
3. When replacing a chassis in the cabinet, always be
certain that all the protective devices are installed
properly,
such as insulating covers, barriers, strain
relief, etc.
4. Before replacing the back cover
of the set, thoroughly
inspect inside the cabinet to set that no stray parts or
tools have been left inside.
5. Before returning the set to the customer, always
perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as terminal, screw-
heads, metal overlays, control shafts, etc. to be sure
the
set is safe to operate without danger of electrical
shock. Plug the AC line cord directly into a 120V AC
3
outlet (do not use a line isolation transformer during
this check).
Use an AC voltmeter having 5000 ohms
per
volt or more sensitivity in the following manner.
Connect a 1500 ohm, 10 watt resistor, paralleled by a
0.15J.lF, 250V AC capacitor, between a known good
earth ground· (water pipe, conduct, etc.)
and the
exposed metallic parts, one at a time. Measure the AC
voltage
across the combination of 1500 ohm resistor
and
0.15J.lF capacitor. Reverse the AC plug at the AC
outlet and repeat AC voltage measurements for each
exposed metallic part. Voltage measured must not
exceed 0.3volts RMS. This corresponds to O.2mA AC.
Any value exceeding this limit constitutes a potential
shock hazard and must be corrected immediately.
AC VOLTMETER
(HAVING 1000n/V,
OR MORE SENSITIVITY)
O.151'F AC·TYPE
PLACE THIS PROBE
f-----..L- ...... ...-J'INI.r_~ ...... ON EAC H EX POS ED
METAL PART
GOOD EARTH GROUND

• THEORY OF OPERATION
1. POWER SECTION
This design utilizes a discontinuous flyback topology
operating in current-mode. This results in a multiple
output switcher who's output track well. No output
filter chokes are needed and slower diodes can be
used. The fast transit response maintains picture
integrity. Cycle by cycle current limiting
makes the
switcher short circuit proof.
Output Voltages:
LOCA NO.: T603
TRANS NO. OUTPUT VOLTAGE REMARK
#3
+75V DC
#4
+50V DC
#6
+25V DC
#2-
+8V DC
#12 -8VDC NC
2. MAIl\! SECTION
1) Horizontal
A phase lock loop is used to synchronize the
horizontal switch to the timing pulses from the
computer. Storage delay in
0303 2SC3636 (MJH
16006) is compensated by the PL L.
Incoming H-sync level is translated by 0301 then
fed into the input
of the phase comparator.
Transistor
0304 watches the falling edge of the
flyback pulse falls to within a few volts of ground
a raising
edge is sent to the other input of the PLL
phase comparator.
The
phase comparator is used in an edge look
mode. Integrated circuit IC301 MC14046 pin 13 is
in a high impedance mode most of the time. If the
raising
edges fed into pins 3 and 14 do not coin-
cide, pin 13
goes into a low impedance state for
the time difference. Depending on which edge
leads the other, current will be fed into or pulled
out of the filter capacitors C302 and C303.
Voltage controlled oscillator input pin 9 deter-
mines the frequency and phase of the output sq uare
wave on pin 4. The free running frequency and
look range is set by C301, R306, R305 and
VR301 and should be preset below the operating
rate.
2) Vertical Deflection
The I C201 TDA 1670 incorporates all of the neces-
sary functions for providing the yoke of a monitor
4
or television receiver" with the current required for
vertical deflection. Incorporated in silicon are a
synchronization oscillator, ramp generator, voltage
regulator, voltage doubler
and power amplifier.
3) Focus Modulation
Each part of a cathode ray tube focuses at a
different voltage. The focus voltage at the center
may
be several hundred volts below the top and
bottom with the right and left sides being at a
different level. To get the best looking picture
over the entire tube, the focus voltage
is modu-
lated
with both a vertical and horizontal signal.
The vertical parabola is fed into a high voltage
amplifier 0401. 0401 swings the focus voltage
at the vertical rate. Mixed in with this signal is
another par.abola at the horizontal rate which
comes from L401. The focus adjustment VR401
sets the DC focus voltage and bias on 0401.
3. H/V REGULATOR SECTION
The patented high voltage regulator sits between the
supply and the top of the primary of the flyback
transformer. An onboard switching regulator is
powered from the 12 volt supply. It watched the
second anode voltage through a 300
mega ohm
resisto in the flyback transformer. During flyback
the regulator pulls the top of the flyback transformer
negative
some amount at the same time the flyback
pulse
is raising the other end. In this way the size of
the pulse as seen by the flyback transformer can be
varied to keep the second anode voltage constant
under load.
4. VIDEO SECTION
1) Sync Processing
To help understand the complex sync processing
please refer to both the schematic and the timing
diagrams at the
end of this document.
2) Vertical
Vertical sync
is detected by a low pass filter and
an 'XOR' gate. Pin 2 of P4 contains Vertical sync.
3) Horizontal
Horizontal sync undergoes
several stages of pro-
cessing.
4) Data Centering
The
second half of the IC102 (74LS221) is used
for data centering. The one shot triggers with the
leading edge of sync and time out with the back
edge of the flyback pulse. The data centering
potentiometer should
be set to center the picture
within the raster.

• POWER CONFIGURATION
This monitor will operate at 115VAC or 230VAC on the user site power line. Locate the voltage selection jumper(J 1)
on the main board inside monitor.
If the factory setting of this jumper is not appropriate for the installation site, use the following modify on procedures.
This jumper must
be properly set before turnning on the monitor.
1. Remove the seven screws located on the rear and bottom of the main unit, and lift off the cover and stand.
2. Set the voltage selection jumper(J1) to the proper voltage. Also verify that the rating of the fuse, located in the fuse
holder on the PC-BOARD
of the monitor. The standard fuse shipped from the factory is a 250V 1.25 Amp slow
blow type.
* The monitor is normally shipped with a U.S. Standard 125VAC power plug. For operation at the 250VAC the
following changes are required. (this may already gave been done by your dealer or distributor):
METHOD OF AC POWER INPUT MODE SELECTION
TO CRT FACE
J~ J110
. J22~ rn
MAIN PC-BOARD
1. 220/240VAC MODE SELECTION
; Jl WI RE CONNECT TO J220.
5
TO CRT FACE
J~
J220 rn n Jll0
2. 120VAC MODE SELECTION
; Jl WIRE CONNECTTOJ110.

• SPECIFICATIONS
1. MONITOR DESCRIPTION
This 15" Full Page Monitor is operated in separate
drive mode input and it is compatible with IBM
PC-AT, XT with full
page Video Card.
2. ENVIRONMENTAL CHARACTERISTICS
1) Operating Condition
Temperature
O°C'" 506C
Humidity 5% '" 95% (non-condensing)
Altitude Up to 3,000 meter
2) Storage Con(~ltion
Temperature -40°C'" 60°C
Humidity 5% '" 95%
Altitude Up to 12,000 meter
3) Drop
Height
Method
4) Vibration
Amplitude
Vibration
Sweep
640cm
6 Surface, 3 Side, 1 Angle
3mm
10'" 20Hz
1 Minute
3. MECHANICAL DESCRIPTION
1) Dimension
Height
Width
Depth
Weight
2) Tilt
420mm
322mm
348mm
13Kg Max
Max 0.5°
3) Picture Tube: CE899M15P40/C188GHZMF
(Clinton, Taiwan)
Size : 15 Inch
Deflection Angle: 110°
Phosphor : P40/C188
4. ELECTRICAL CHARACTERISTICS
1) AC Power Input
Power Supply 120V AC, 60Hz
220/240V AC, 50/60Hz
(Selected in 220/240VAC
Power Consumption:
by inter-jumper)
50W max
2) Signal Input
Horizontal Sync
o Polarity
o Signal Level
o Frequency
Negative
TTL
62.75KHz 6
Vertical Sync
o Polarity
o Signal Level
o Frequency
Video Signal
o Polarity
o Signal Level
o Band Width
3) High Voltage
Anode Voltage
4) Display Area
Horizontal
Vertical
5) Resolution
Horizontal
Vertical
6) Display CenterinlJ
Vertical
Horizontal
Negative
TTL
59.88Hz
Negative
TTL
70MHz at 3dB
17.0KV ± 0.5KV
264 ± 3mm
197 ± 3mm
1,006 Dots
1,048 Lines
The valid video
area data zone
shall be centered within 3mm.
The valid video
area data zone
shall be centered within 3mm.
Display
centering
Inner 3mm
area
bezel
7) Geometric Distortion
(1) Trapezoid
II
I
I r I
I I
I
I I
I I
~
~
A, B, C, D: less than 3.0mm

(2) Pincushion
a,b,c,d: less than 3.0mm
(3) Barrel
A, B, C, D: less than 3.0mm
(4) Rotation
,/
-
t
Hl
~
.,v
-r
H2
Display
area
Center
scan line
7 7 7 I I I / / Ground plane
H1, H2: less than 0.50
(5) Parallelogram
The
edge of the image is within the area in-
dicated by the dotted line below.
A, B: less than 4.0mm
7
8) Linearity
Horizontal
and Vertical linearity shall be less than
6%.
See Figure
1-l-4-!-+-l-H-f-H} XI
Horizontal Linearity:
Vertical Linearity:
9) Light Output
Min Luminance
Max Luminance
Condition
10) Screen A ttr ibute
Input Level
Output
VO Vl
Level
1 1 0
1 0 1
0 1 2
0 0 3
YI
Xmax -Xmin
Xmean
x
0.5 x 100 (%) < 6%
Ymax -Ymin
Ymean x
0.5 x 100 (%) < 6%
o F/L
Over 45 F/L, back raster should
be cut off .
After 30 Minutes Warm up
Full White Pattern
Screen Attribute
Black
(0%)
Dark Gray (33% ± 12%)
Light Gray(67% ± 12%)
White (100%)
11) Raster Size Regulation
Ras'(er Size shall change less than 0.5% with a CRT
luminance from max to min.

12) Signal Timing Chart
(1) Horizontal Sync Timing
SYNC
(negative) U
l""'oe:;-----1.879US (12.5 CHAR.)
15.94uS
u
... ---- +4V ± 1.5V
---- OV + O.4V
-OV
ioE----- (62.75KHz -106 CHAR.)---"~
150.3nS "'""' -
VIDEO
(negative)
(2) Vertical Sync Timing
L
~--~---+4V±1.5V
___ ----l L-.-.-OV ± O.4V
f.e------12.23uS -----;;.!
(82 CHAR.)
1oE------- 3.608uS
(24 CHAR.)
-OV
active display area
FO = 59.868MHz, 1 CHART = 150.3uS
SYNC
(negative) u U
=-+4V±1.5V
i _____ OV+O.4V
I .. ""E---- 120.75uS
(8 Scan Line)
1-------16.70mS ---------..1
(1048 Scan Line / 59.88Hz)
_·-OV
VIDEO . II
(negative~ ~
1L----+4V ± 1.5V
.---------------' OV + O.4V
blanking time
16.03mS
(1006 Scan Line)
~----- 669.3uS
(42 Scan
Line)
8
active display area

• ADJUSTMENT METHOD
1. CONDITIONOF ADJUSTMENT PROCEDURE
1) Input Source
2) Warm up Time
3) Contrast
4) Brightness
5) Pattern
2. CAUTION
120VAC, 60Hz
220VAC/240VAC, 50Hz
(Selected in 220VAC/240VAC
by inter-jumper J1 from J 11 OV
to J220V)
More than 30 minutes
Max
25
F/L
Unless otherwise specified,
Cross-Hatch Pattern.
1) Unless otherwise specified, adjustment and check
should
be made under the standard condition.
2) To be sure image width, height and distortion,
proceed
as below:
\-i----)--
Eye
* Measure level with respect to tube axis.
3) Unless otherwise specified, make DC voltage
measurement,
using a digital voltmeter.
4) Hold the CRT surface illumination to 25 F/L at
the time
of adjusting the brightness and also con-
firm them.
3. ADJUSTMENT ITEM
1) Power Supply Adjustment
CD Condition: Without Signal
® First adjust the power supply unit before
adjusting all controls. Also connect the power
supply unit
to the display unit and turn the
unit on.
® Turn VR603 (L/v ADJ) to adjust the voltage
across the GT4 and the ground to 75V±0.5V.
2) H-HOLD Adjustment
CD Condition: Without Signal
® Turn VR301 (H-HOLD VR) to adjust the fre-
quency across the H-DYwire(blue) and ground
(chassis bracket) to 60 ± 0.5KHz.
3) V-HOLD Adjustment
CD Condition: Without Signal
® Turn VR201 (V-HOLD VR) to adjust the fre-
quency across the V-DY wire (yellow) and
ground (chassis bracket) to 54 ± 2Hz.
9
4) Raster-Centering Adjustment
CD Condition: Without Signal
® Locate VR402 (SUB-BRIT. VR) and EXT-
BRIT. VR to max position.
® Turn Centering-Magnet Until raster comes to
the center of the screen.
5) H·PHASE Adjustment
Inner bazel
Raster
a = a'
b=b'
CD Condition: Cross-Hatch Pattern
® Locate VR402 (SUB-BRIT. VR) EST-BRIT.
VR and EXT-CaNT. VR to max Position.
® Adjust display area to horizontal center of
raster using VR101 (H-PHASE VR).
Raster
Display
area
...
6) Tilt Adjustment
a'
a = a'
Loosen the deflection yoke clamp, and turn in the
arrow directions
to adjust the tilt within 0.5".
7) Geometric Distortion Adjustment
Adjust
each correcting magnet to set rightly until
the
square line of the Cross-Hatch pattern becomes
to be linear. (to come within Over-Lay Jig).
8)
High Voltage Adjustment
CD Condition: with Signal
® Locate EXT-BRIT. VR and EXT-CaNT. VR
to max position.
® Connect H/V meter prove (-) terminal to
ground (chassis bracket) and (+) terminal to
anode cap of CRT.
@ Turn VR302 (H/V-ADJ VR) to adjust 17 ±
0.5KV.

9) H-Linearity, V-Linearity Adjustment
CD Condition: Cross-Hatch Pattern, 25 ± 2 F/L.
® Adjust L301 (H-LiN COl L) to make Same
Character Size of Horizontal Axis.
@ Adjust VR201 (V-LIN VR) to make same
Character Size of Vertical Axis.
10) H-Size, V-Size Adjustment
CD Condition:: Cross-Hatch Pattern, 25 ± 2 F/L.
® Adjust L302 (H-WI DTH COl L) .to come with-
in Over-Lay Jig.
@ Adjust VR202 (H-Size VR) to come within
Over-Lay Jig.
1
i) Sub-Brightness Adjustment
CD Condition: Full White Pattern
® rurn VR402 (SUB-BRIT VR) to Adjust
Max
Over 45 P /L
Min Under 0 F/L
12) Focus Adjustment
CD Condition: Full "@" Character at 35 F/L.
® Adjust VR401 (FOCUS VR) to Set Best
Condition.
• MAJOR OPERATING COMPONENTS
POWER SWITCH --------'
1_ POWER SWITCH
2_ CONTRAST CONTROL
3. BRIGHTNESS CONTROL
POWER CORD AC
SIGNAL CABLE
4. SIGNAL CABLE
BRIGHTNESS
~--------'CONTRAST
Press the power switch to turn on.
Turning this control clockwise
increases the display contrast.
Turning this control clockwise
increases the overall brightness.
0 J
"-
Eli
oI[!J CplO !:t
L/J
-2
~ --
........
'-
Connect at the terminal of CPU.
10

BLOCK DIAGRAM
MODEL NO: MP5671
SIGNAL INPUT
VIDEO
NAND GATE
CONNECTOR
Pl
IC101
H-
SYND
V-SYNC
SYNC VERT
INVERSION
OSCILLATION
IC102
,.-----.
IC201
+25V
IC REGULATOR
2
IC302
~
H-PHASE
C109, VR101
NOISE FILTER
TS01,CS01,CS02
CS03,CS04
AC INPUT
120VAC
-8V
RECTIFICATION
DS15,CS29,C634
CNC)
11
VIDEO AMP
0103
CONTR~ET
+50V
CONTROL
0101, 0102
r-
0104, VR102
3
1
VERT. CENTER
+12V
CIBTRIL
0201, VR204
HORIZ
OSCILLATION
IC301
AC SELECTOR
220VAC 110VAC
~
0
0---
0
1
RECTIFICATION
SI~~8l~
DS01,CS 8,CS09
1
+BV
RECTIFICATION
D614,C62B,CS33
cb
~
VIDEO
L;AltI~?
~ I I I
GN
~ III
CRT
I I I
+5V
IC REGULATOR
+8V
HEATER
G F2G
~
I
IC103
cb
S-PARAMETER
Gl BIAS
G2 BIAS
.r --,
GENERATR
CONTROL CONTROL
I
IC401
1 ~
i II
I
IV-DY
J
L __ J
FOCUS
F B T
H/V REG
MODULATION
0401, VR401
1401
MODULE
1301
PS3
HORIZ FEED
BACK
0304
HORIZ DRIVE
HORIZ OUTPUT
r --,
T301, 0302
0303
T ~ I
l :H-DY
L __ J
H-DRIVE FEED
H-LIN,H-SIZE
BACK CONTROL
TS02, OS02
L301,L302
SWITCHING
SWITCHING
SWITCHING
OSCILLATION
OUTPUT
TRANS
ICS01
OS01
TS03
PHOTO COUPLER
ICS02
1 1
+25V +50V
+75V
RECTIFICATION
RECTIFICATION
RECTIFICATION
DS13, CS27, CS3;;
D612,C62S,CS31
DS11,CS25,CS30
cb
cb 0
12

• TROUBLE SHOOTING
NO Character Image
Turn the VR402(SUB-BRIT. VR), EXT-BRIT. VR
EXT-CONT VR to max position.
Check P4, PS4
50VDC line
13
NO
NO
NO
Refer to no Raster
Check input signal
or logic.
Check
0101,0102,
IC101

NO Raster
Turn the brightness control max position
NO
Yes
Abnormal
Trouble in Peripheral
Circuit
of 0612, 0613
14
Yes
Abnormal
No
Normal
Normal
Replace
Fuse, TR
F601,0601
Trouble Video
Circuit
Trouble in
0302,0303
Replace 0601

NO H/V Regulation
TURN THE BRIGHTNESS
CONTROL
MAX POSITION
Normal
Normal
Trouble in
H/V Reg. Module
Abnormal Trouble in IC602
Abnormal Trouble
in D310
15

NO Horizontal Sync
Abnormal Trouble
in PC
NO
Replace IC103
Yes
Abnormal
Abnormal Trouble
in IC102
Abnormal
Abnormal Trouble
in IC301
16

NO Vertical Sync
Abnormal Trouble
in PC
Normal
NO
Replace IC103
Yes
Abnormal
Abnormal Trouble in IC102
Abnormal
Normal Trouble
in I C301
17

Single Horizontal Line
Abnormal Trouble in
IC201
Normal
Abnormal
Normal
Abnormal
Abnormal
Replace 0613
18

• CIRCUIT DIAGRAM DISPLAY SYMBOLS
1. RESISTOR
Resistance value
When no unit is provided: [nJ
K: [knJ
M: [MS1]
Rated permissible power capacity
When no display is made: 1/4 [W]
Others: Display are provided
Resistor type
Under than
1/2 [W] : Carbon resistor
Over than 1[W] Oxidized metal film resistor
2. CAPACITOR
Capacitance
When no unit is provided:
Others: Display are provided
Withstand voltage
No display:
1) Polyester
2) E.T.C.
Others
AC display
Capacitor type
DC 100 [V]
DC 50 [V]
DC withstand voltage [V]
AC withstand voltage [V]
No type display: Ceramic and electrolytic
capacitor
P
MP
PS
Polyester capacitor
Metallized polyester capacitor
Polystyrene capacitor
• RMS MEASUREMENT RESULTS OF THE IC'S
Measured with high impedance V.T.V.M. or circuit tester under line vortage 120V AC. Voltage reading may vary ±1 0%.
Video signal is a white pattern.
~
IC101 IC102 IC201 IC301 IC601 IC602
PIN NO. 74F08 74LS221
TDA1670
MC14046 UC3842 TI L113
1 1.5 2.7 12.0 12.0 2.5 75.0
2 1.5 5.0 25.0
0.1 2.5 74.0
3 1.5 5.0 3.0 10.0 0 0
- -,-
4 4.0 3.5 0.5 6.0 2.0 0
5 4.0 0.2 0 0 0 2.4
6 4.7 4.7
0.1 1.3 2.7 0
7 0 0.5 7.0 1.3 16.0 *
8 4.7 0 0 0 5.0 *
9 4.0 3.3 5.0 3.3 * *
10 4.0 5.0 5.5 3.3 * *
11
1.5 5.0 4.5 1.5 * *
12 1.5 4.5 4.0 10.0 * *
13 1.5 0.7 0 3.3 * *
14
5.0 4.5 25.0 9.5 * *
15 * 0.6 1.0 2.0 * *
16 * 5.0 * 12.0 * *
19

• WAVEFORMS
WAVEFORM MEASUREMENT CONDITIONS
1. The voltage level and waveform at each point are given below on 120V/AC power when this set is connected to a
personal computer with a video signal input at a white pattern with contrast max.
2. Indicates the waveform check points.
(I n the chart, waveforms are measured from the point indicated to chassis
ground.)
UNIT: Vp-p
KD
0
KD
iJlJl
~v
10
CD
~
KV
ty-y
T
IV
~V
(J)
~
~
fM
1M
Irr
I@
K0
~
rJV\
1M 1M
~
K§
~M In
20

SCHEMATIC DIAGRAM
MODel NO: MP5671
CHASSIS NO: LCA
WARNING : BEFORE SERVICING THIS CHASSIS READ
THE "X-RAY RADIATION PRECAUTION" SAFETY
PRECAUTION"AND" PRODUCT SAFETY" NOTICE IN MANUAL
21
WARNING :"THIS EOUIPMENT CONTAINS SAFETY
CRITICAL COMPONENTS ALL PARTS SHOWN IN THE SHAD-
ED AREAS OF THE SCHEMATIC ARE SAFETY REPLACE
SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACT-
URERS RECOMMENDED PARTS LIST FOR EXACT REPLAC-
EMENTS."
CAUTION "THE SHADED AREA AND.t. MARKS IN THE
SCHEMTIC DIAGRAM AND PARTS LIST COMPONENTS WHICH
HAVE SPECIAL CHARACTERISTICS IMPORTANT IN THE
ORIGINAL CIRCUIT OR SPECIFIED IN THE PARTS LIST.
BEFORE REPLACING ANY OF THESE COMPONENTS READ
CAREFULLY THE PRODUCT SAFETY NOTICE.
DO NOT DEGRADE IN THE SAFETY OF THE EOUIPMENT
THROUGH IMPROPER SERVICING.
NOTE
1. RESISTANCE IS SHOWN IN OHM K=l,eee
M=1,eee,e00.
RATED POWER OF RESISTER NOT NOTED
IN SCHEMATIC DIAGRAS S 1/4W
2. CAPACITANCE IS SHOWN IN UF P=UUF. RATED VOL-
TAGE OF CONDENSER NOT NOTED IN SCHEMATIC DIAGR-
AM' S 5eV
3. ABBREVIATION B SYMBOL
~R-COMPOSITION ~ R-METAL FILM
<DTANTAL CAPACITOR ® R-METAL OXIDE
®C-POL YESTER @ R-CEMENT
@NON POLAR CAPA:CITOR ® R-FUSIBLE
@C-METAL POLYESTER 0 C-POL YSTYRENE
@C-POLYPROPYLENE @ R-WIRE
4. VOLTAGE IS READ WITH V. T. V.M. FROM INDICATED
POINT TO SIGNAL GROUND AND WAVEFORM TAKEN USING
PERSONAL WITH ALL.
5. THIS SCHEMATIC DIAGRAM IS SUBJECT TO CHANGE
UITHOUT NOTICE FOR FAR FURTHER IMPROVEMENT.
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