Service Manuals, User Guides, Schematic Diagrams or docs for : PHILCO TV PFS2908 Philco_PFS2908
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FILE NO.
SERVICE MANUAL Colour Television
Model No. PFS2908
(Argentina)
Service Ref. No. PFS2908-00
Specifications Product Code: 113020208
Power Source . . . . . . . . AC220V, 50Hz / 60Hz
Receiving System . . . . . PAL (M/M, N/N), NTSC (M/M)
Channel Coverage
Antenna mode VHF: CH02-CH13, UHF: CH14-CH69
CATV mode VHF band: CH01-CH13, Mid band: CH14-CH22 Original Version
Super band: CH23-CH36, Hyper band: CH37-CH64
Ultra band: CH65-CH94 and CH100-CH125
Low mid band: CH95-CH99 Chassis Series: LB6-A
Video IF . . . . . . . . . . . . . 45.75MHz
Aerial Input Impedance 75
Input Terminals
AV1 (Video): Composite Video Input (Phone Jack) x 1 Give complete "SERVICE REF. NO." for
S-Video Input (Separated Y/C) DIN 4-pin Jack x 1 parts order or servicing. It is shown on the
AV1 (Audio):L/R Stereo Input (Phone Jack) x 1 set rating plate at the cabinet back of the unit.
AV2 (Video):Composite Video Input (Phone Jack) x 1
AV2 (Audio):L/R Stereo Input (Phone Jack) x 1 set
DVD (Video): Component Y, CB, CR Input (Phone Jack) x 1 set
DVD (Audio): L/R Stereo Input (Phone Jack) x 1 set
Output Terminals This T.V. receiver will not work properly in
Video Monitor Output: Phono jack x 1 foreign countries where the television trans-
Audio Monitor Output: L/R Stereo Output (Phone Jack) x 1 set mission system and power source differ from
Headphone Jack: Mini stereo jack x 1 the design specifications. Refer to the speci-
Sound Output (RMS) . . . 5W + 5W fication table.
Speaker . . . . . . . . . . . . . . 6cm x 12cm x 2 pcs.
Dimensions . . . . . . . . . . . 750(W) x 590(H) x 416.5(D) mm
Weight . . . . . . . . . . . . . . . approx. 36.5 Kg
Specifications subject to change without notice.
BG4J
Contents
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8
Service Adjustments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-18
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chassis Electrical Parts List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20-27
Safety Notice
SAFETY PRECAUTIONS
1: An isolation transformer should be connected in the 3: When replacing a chassis in the cabinet, always
power line between the receiver and the AC line be certain that all the protective devices are
when a service is performed on the primary of the installed properly, such as, control knobs, adjust-
converter transformer of the set. ment covers or shields, barriers, isolation resistor-
capacitor networks etc.. Before returning any
2: Comply with all caution and safety-related notes television to the customer, the service techni-
provided on the cabinet back, inside the cabinet, on cian must be sure that it is completely safe
the chassis or the picture tube. to operate without danger of electrical shock.
X-RADIATION PRECAUTION
The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially con-
structed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must
be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazard-
ous X - RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer
to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified
limits, take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment,
and high voltage check to maintain the high voltage within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is particularly recommended that only parts designated on the parts list
in this manual be used for component replacement designated by mark . No deviations from resistance
wattage or voltage ratings may be made for replacement items designated by mark .
-2-
P10/21
+8V
Antenna +5V
+5VRC +8V
CRT DRIVE
KEY SW R/G/B CRT
+5VRC
R/G/B +200V
+28V HV/Fo/Sc
R/C PRE-AMP
TUNER BUS H-OUT DY-H
IF DY-V
(LV76113) HORIZ-DRIVE HORIZ-OUT
SAW filter E W OU T
FBP IN FBT PLUSE
SUSOC
-16V +16V
AV2/DVD/S-VIDEO C VIDEO
-3-
V-
MONITOR OUT VIDEO V+ (LA78141-E/
LA7846NZ)
S-VIDEO Y/AV1-V NJM2533MP VIDEO VERT-OUT
+8V
Chassis Block Diagrams
AV1/AV2/DVD AUDIO IN AUDIO BUS 10V
MONITOR OUT AUDIO AUDIO L/R +8V
SIGNAL PROCESSING CIRCUIT
+5V SPEAKER(L)
SIF OUT
(LA72703) L/R L
+140V +32V
AV1/AV2/DVD L/R L/R (LA42205-E) R
AUDIO INPUT TC4052BFP
+28V
AC220V (SANKEN) AUDIO OUTPUT AUDIO-OUT
SPEAKER(R)
10V
POWER
IC Block Diagrams
IC601 POWER SUPPLY IC (STRW6754)
FUNCTIONAL BLOCK DIAGRAM
-4-
IC Block Diagrams
IC201 < IF/Video/Chroma/Def./CPU > LA76113
-5-
IC Block Diagrams
IC501 LA78141
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