Samsung CX528ZSE User manual

Sy
WSC
FILE
NO.
:
P54S+RM101+SIF
CON.
SERVICE
MANUAL
COLOUR
TV
RECEIVER
REMOTE
CONTROL
SYSTEM
CHASSIS
NO.:
P54S
&
RM101
MODEL
NO.:
CX528ZSE/SGVX
SAFETY CAUTION :
Before
serving
this
chassis
it
is
important
that
the
service
techinician
read
and
follow
the
a
“Safety
Precaution”
and
"Product
Safety
Notice”
in
this
Service
Manual.
SPECIFICATIONS
Television
System
PAL/SECAM
PAL/SECAM SECAM
Bend
B.G D.K
VHF
PAL/SECAM SECAM
8.G D.K
Colour
Sub—carrier
34.47
34.47
(Units: MHz)
Channel Coverage
Intermediate
Frequencies
Picture
Tube
14”,
16",
18,
20°
diagonal
measured,
In—line—gun,
Black
stripe
90
degrees
deflection
VHF
/UHF
Telescopic
dipole
entenna
(75
ohm
unbalanced
type)
Power
Requirements
220V,
AC.
SOHz

PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have
special sefety-related characteristics. These characteristics
are often passed unnoticed by 8 visual inspection and the
protection afforded by them cannot necessarily be ob—
tained by using replacement components rated for higher
voltage,wattage,etc. Replacement parts which have these
special sefety characteristics are identified in this menue!
and its supplements; electrical components having such fea—
tures are identified by shading on the schematic diagram
and the perts list.
Before replacing any of these components, read the
perts list in this manual carefully. The use of substitute
replacement perts which do not have the same safety
characteristics as specified in the parts list may create
shock,fire,X—ray radiation or other hazards.
SERVICE NOTES
1. When replacing parts or circuit boards, clamp the lead
wires to terminals before soldering.
2. When replacing @ high wattage resistor (oxide metel
film resistor) in circuit board, keep the resistor 10mm
(1/2 in.) away from circuit board.
3. Keep wires away from high voltage or high temperature
components.
4. If any Fuse in this TV receiver is blown, replace it
with the FUSE specified in the chassis parts list.
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SAFETY INSTRUCTIONS
WARNING : BEFORE SERVICING THIS CHASSIS, READ THE “X-RAY RADIATION PRECAUTION,” "SAFETY PRECAUTION”,
"PRODUCT SAFETY NOTICE” AND "SERVICE NOTICES” DESCRIBED BELOW.
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazard—
ous X-RAY RADIATION. To avoid such hazards, the high
voltage must not be above the specified limit.
The nominal value of the high voltage of this receiver
is 24.5KV at zero beam current (mininum brightness).
The high voltage must not, under any circumstances,
exceed 25.5KV.
Each time a receiver requires servicing, the high vol-
tage should be checked following the HIGH VOLTAGE
CHECK procedure on this manual. It is recommended
the reading of the high voltage should be recorded as
a part of the service record.
It is important to use an accurate and reliable high
voltage meter.
. The only source of X-RAY RADIATION in this TV re—
ceiver is the picture tube. For continued X-RAY RA-
DIATION protection, the replacement tube must be ex—
actly the same type tube as specified in the parts list.
. Some parts in this receiver have special safety-related
characteristics for X-RAY RADIATION protection.
For continued safety, parts replacement should be un—
dertaken only after referring to the PRODUCT SAFETY
NOTICE.
SAFETY PRECAUTION
—
. Potentials as high as 25,000 volts are present when
this receiver is operating. Operation of the receiver out—
side the cabinet or with back board removed involves
a shock hazard from the receiver.
a. Servicing should not be attempted by anyone who is
not thoroughly familiar with the precautions necessary
when working on high-voltage equipment.
b. Alway discharge the picture tube anode to the re—
ceiver chassis to keep off the shock hazard before
removing the anode cap.
c. Perfectly discharge the high potential of the picture
tube before handling the tube. The picture tube is
highly evacuated and if broken, glass fragments will
on
an
be violently expelled.
. If any Fuse in this TV receiver is blown, replace it with
the FUSE specified in the chassis parts list.
. When replacing parts or circuit boards, wind the lead
wires around terminals before soldering.
When replacing a high wattage resistor (oxide metal
film resistor) in circuit board, keep the resistor 10mm
Keep wires away from high voltage or high temperature
components.
. This receiver can be operated under AC 220-240 volts,
50Hz. NEVER connect to DC supply or any other power.
PRODUCT SAFETY NOTICE
agram and the parts list.
X-RAY RADIATION.
Many electrical and mechanical parts in this chassis have special safety-related characteristics.
stics are often passed unnoticed by a visual inspection and the X-RAY RADIATION protection afforded by then
cannot necessarily be obtained by using replacement components rated for higher voltage, wattage, etec. Replace—
ment parts which have these special safety cheracteristics are identified in this manual and its supplements, ele—
ctrical components having such features are identified by the international hazard symbols on the schematic di-
Before replecing any of these components, read the parts list in this manual carefully. The use of substitute re—
placement parts which do not have the same sefety characteristics as specified in the parts list may create
These characteri—

ALIGNMENT
1. GENERAL
Read the following carefully before attempting alignment.
=
)
3)
4)
9)
A warm up period of at least twenty minutes should be allowed for proper stabilization of test equipment and receive
Alignment requires en exact procedure and sequence of contents.
A fine blade non-metallic alignment tool is required for peaking of coils during alignment.
Isolation transformer should be used to prevent shock hazards.
The test equipment specified or its equivalent is required to perform the alignment properly.
Use of equipment that does not meet these requirement may result in improper alignment.
Correct matching of the equipment is essential.
Failure to use the proper matching will result in response which can not represent the true operation of the receiver.
Excessive signal and bias voltages from the generator can cause overloading of the receiver circuits and distortion
of the response curve.
All shields and shield grounding braids must be in place and grounded to chassis before proceeding with alignment.
The A.C. power line voltage should be kept within the standard voltage + 5 volts during alignment.
10) Do not attempt to connect or disconnect any wire while the receiver is in operation.

2. MAGNIFIED RESPONSE ALIGNMENT
2.1. EQUIPMENT
2.1.1. Sweep /Marker generator
2.1.2. Monitor scope (or Oscilloscope)
2.1.3. D.C. Power Supply (+16.5Y)
2.1.4. Bias Supply (+4V ~~ +4.5V)
2.1.5. Matching Pad (See Figure 3)
2.1.6. Direct probe
2.2 CONNECTIONS
MONITOR SCOPE
SWEEP /MARKER GENERATOR