Akira CT-21FS9R Schematic
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CHASSIS: 5P60
MODEL:
CT-21FS9R
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Model No: CT-21FS9R
Version 1.0
3
CONTENT
SAFETY NOTICE ...................................................................................................................................4
TECHNICAL SPECIFICATION ............................................................................................................. 5
GENERAL SPECIFICATION................................................................................................................. 5
CHASSIS BLOCK DIAGRAM ............................................................................................................... 7
CHASSIS WIRING DIAGRAM............................................................................................................ 17
PBC BOARD ......................................................................................................................................... 18
SERVICE ADJUSTMENT .................................................................................................................... 21
MECHANICAL DISASSEMBLY......................................................................................................... 30
SCHEMATIC DIAGRAM..................................................................................................................... 32
THROUBLE SHOOTING CHART ....................................................................................................... 34
Model No: CT-21FS9R
Version 1.0
4
SAFETY NOTICE
SAFETY PRECAUTIONS
1. An isolation transformer should be connected in the power line between the receiver and the AC
line when a service is performed on the primary of the converter transformer of the set.
2. Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet,
on the chassis or the picture tube.
3. When replacing a chassis in the cabinet, always be certain that all the protective devices are
installed properly, such as control knobs, adjustment covers or shields, barriers, isolation resistorcapacitor network etc. Before returning any television to the customer, the service technician must
be sure that it is completely safe 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 constructed 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 hazardous X-RADIATION. To avoid such hazards, the high voltage
must be maintained within specified limit. Refer to this service manual, high voltage must be
maintained within the specified limits.
PRODUCT SAFETY NOTICE
Product safety should be considered when a component replacement 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 designed 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 !.
Model No: CT-21FS9R
Version 1.0
TECHNICAL SPECIFICATION
FEATURES
AC 90-260V 50/60Hz
MULTI SYSTEM: PAL BG/DK/I, SECAM BG/DK L/L (OPTION), NTSC M (OPTION)
VOLTAGE SYNTHESISTED TUNING SYSTEM
200 PROGRAMS MEMORY
BLUE BACK FUNCTION
180 MINUTES SLEEP TIMER
FULL AUTO PROGRAM
TIMER ON
CLOCK; CHILD LOCK
1 AV INPUT + 1 FRONT AV +S – VIDEO INPUT
2 EURO SCART (OPTION)
1 YUV INPUT (OPTION)
1 AV (MONITOR) OUTPUT
10 PAGES TELETEXT (OPTION)
BLACK LEVEL STRETCH
NICAM/A2 STEREO (OPTION); SURROUND SOUND, AV STEREO SOUND
1 GAME
200 YEAR CALENDER
TRUBASS (OPTION)
COMB-FILTER (OPTION)
FOUR PICTURE MODE: USER, SOFT, STANDARD, RICH
FOUR SOUND MODE: USER, SPEECH, MUSIC, THEATER
GENERAL SPECIFICATION
POWER CONSUMPTION 150W MAX
STANDBY POWER CONSUMPTION 5W
RECEIVER SYSTEM D/K; I; B/G; M
COLOUR SYSTEM PAL/ SECAM / NTSC
VISION INTERMEDIATE FREQUENCY 38.9MHz
INTER-CARRIER FREQUENCY
CHROMA IF FREQUENCY PAL/NTSC 34.47 / 35.32 MHz
ANTENNA TYPE DIN TYPE 75 OHM
CHANNELS RECEIVING
TUNING SYSTEM VS TUNING
AV IN/OUT
4.5 MHz (M)
5.5 MHz (B/G)
6.0 MHz (I)
6.5 MHz (D/K)
5.85 MHz (NICAM B/G, D/K)
6.55 MHz (NICAM I)
5.74 MHz (GERMAN STEREO)
VHF-1 A-0; E2-E4; S1-S9 CH 44.25-161.25 MHz
VHF-2 S10-S41; E5-E12 CH 168.25-163.25MHz
UHF E21-E69 CH 471.25-863.25 MHz
1 AV IN+1 AV OUT; 1 FRONT AV INPUT
1 S-VIDEO IN, 1 YUV IN (OPTION);
21 PIN SCART (OPTION)
5
Model No: CT-21FS9R
Version 1.0
AV IN/OUT SPECIFICATION
OSD LANGUAGE ENGLISH, RUSSIAN, IRANIAN, ARABIC,
TELETEXT LANGUAGE PAN-EUROPEAN, CYRILLIC 2, IRANIAN,
AUDIO OUTPUT POWER >5W (1KHz, 0.5v INPUT, 10% THD)
SAFETY AUTHENTICATION STANDARD CB/ CE
LED INDICATOR POWER ON
HAND SET TYPE HS08 HS09
HAND SET POWER SUPPLY BATTERY 3V UM-3/R6/AA x2
COLOUR PICTURE TUBE 25” – 38” 110 DEGREE TUBE
REMOTE CONTROL DISTANCE 5m
Model No: CT-21FS9R
Version 1.0
Y/C IN-----y 1.0 0.2V
VIDEO IN ----1.0 0.2V
AUDIO IN ---- 0.2V (r.m.s)
VIDEO OUT ---- 1.0 0.2V
AUDIO OUT ----0.2V (r.m.s)
RGB IN: -----0.7V
YUV ---- Y 1.0V
ITALIAN, TURKIC, GERMAN, FRANCE
ARABIC
p-p
; U 0.7V
p-p
p-p
75 ohm c: 0.7V
75ohm
p-p
75ohm
p-p
; V 0.7V
p-p
p-p
p-p
75 ohm
6
CHASSIS BLOCK DIAGRAM
Model No: CT-21FS9R
Version 1.0
7
IC 401 (UNIVERSAL HI-FI AUDIO PROCESSOR) TDA9859H
IC605. IC606 <REGULATORS> L7800 SERIES
Model No: CT-21FS9R
Version 1.0
INPUT
1
REFERENCE
VOLTAGE
STARTING
CIRCUIT
CURRENT
GENERATOR
REFERENCE
VOLTAGE
ERROR
AMPLIFIER
SOA
PROTECTION
THERRMAL
PROTECTION
SERIES
PASS
ELEMENT
OUTPUT
GND
2
3
8
IC 402 (SRS TRUBASS) NJM2192 AM
9
Model No: CT-21FS9R
Version 1.0
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