21YF30
SPECIFICATIONS
Convergence .................................................................Self Convergence System
Focus............................................................ Electrostatic Focus High Bi-PotentialIMPORTANT SERVICE NOTES
Sweep Deflection......................................................................................Magnetic
Maintenance and repair of this receiver should be done by qualified
Intermediate Frequencies
service personnel only.
Picture IF Carrier ..................................................................................38.9MHz
Sound IF Carrier Frequency
5.74MHz ..........................................................................................33.16MHz
SERVICE OF HIGH VOLTAGE SYSTEM AND PIC-
5.5MHz ..............................................................................................33.4MHz
Colour Sub-Carrier Frequency ...........................................................TURE TUBE34.47MHz
When servicing the high voltage system, remove static charge from it by
Power Input ..................................................................... AC110 ~ 240V, 50/60 Hz
Power Consumption ........................................................................................Connecting a 10K ohm Resistor in series with an insulated wire(such as a99W
Audio Power Output Rating ...............................................................test probe) between picture tube dag and 2nd anode lead. (AC line cord4.0W(rms)X2
should be disconnected from AC outlet.)
Speaker
1. Picture tube in this receiver employs integral implosion protection.
Size....................................................................................5 x 9 cm Eliptic (2pc)
2. Replace with tube of the same type number for continued safety.
Voice Coil Impedance........................................................... 16 ohms at 400 Hz
3. Do not lift picture tube by the neck.
4. Handle the picture tube only when wearing shatterproof goggles and after discharging
Aerial Input Impedance
the high voltage completely.
VHF/UHF .......................................................................... 75 ohms Unbalanced
Receiving Channels (PAL B/G)
VHF-Channels .......................................E2(48.25MHz) thru E12(224.25MHz)X-RAY
UHF-Channels...................................E21(471.25MHz) thru E69(855.25MHz)This receiver is designed so that any X-Ray radiation is kept to an absolute
Receiving Frequency
2 VHF-Channels ..............................................................48.25 thru 463.25MHzMinimum. Since certain malfunctions or servicing may produce potentially
hazardous radiation with prolonged exposure at close range, the following
UHF-Channels............................................................471.25 thru 863.25MHz
precautions should be observed:
Dimensions.....................................................................................1. When repairing the circuit, be sure not to increase the high voltage to more than 28.6kVWidth: 502 mm
Height: 486 mm(at beam 0 mA) for the set.
Depth: 482 mm2. To keep the set in a normal operation , be sure to make it function on 27.0kV ?1.5kV (at
Weight(approx): 22 kgbeam 1,100 mA) in the case of the set. The set has been factory - Adjusted to the above-
Cabinet material ....................................................................................mentioned high voltage.All Plastics
\\\\\ If there is a possibility that the high voltage fluctuates as a result of the repairs,
never forget to check for such high voltage after the work.
Specifications are subject to change without prior notice.3. Do not substitute a picture tube with unauthorizerd types and/or brands which may
cause excess X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety Checks.
1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not
lodged between the chassis and other metal parts in the receiver.
2. Inspect all protective devices such as non-metallic control knobs, insulating fishpapers,
cabinet backs, adjustment and compartment covers or shields, isolation resistor- ca-
pacity networks, mechanical insulators etc.
2-12-2 |
ACEC
