DAEWOO ELECTRONICS DV-F202 Series, Руководство по обслуживанию

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• Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires
have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order
to verify compliance with safety standards.
1. Insulation resistance test
Confirm the specified insulation resistance between power cord plug prongs and externally exposed parts of the set
(RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is
greater than values given in table 1 below.
2. Dielectric strength test
Confirm specified dielectric strength between power cord plug prongs and exposed accessible parts of the set (RF
terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is
greater than values given in table 1 below.
3. Clearance distance
When replacing primary circuit components, confirm
specified clearance distance (d), (d') between soldered
terminals, and between terminals and surrounding
metallic parts. See table below.
Table 1: Rating for selected areas
* Class II model only.
Note: This table is unofficial and for reference only. Be sure to confirm the precise values for your particular country and
locality.
4. Leakage current test
Confirm specified or lower leakage current between B (earth ground, power cord plug prongs) and externally exposed
accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks,
earphone jacks, etc.)
Measuring Method: (Power ON)
Insert load Z between B (earth ground, power cord plug
prongs) and exposed accesible parts. Use an AC
voltmeter to measure across both terminals of load Z.
See figure2 and following table.
Table 2: Leakage current ratings for selected areas
Note: This table is unofficial and for reference only. Be sure to confirm the precise values for your particular country and
locality.
Fig. 2
AC Line Voltage Region
Insulation Dielectric Clearance
Resistance Strength Distance (d), (d')
100V Japan
≥
1 M
Ω
/500 V DC 1kV AC 1 minute
≥
3 mm
110 to 130V
USA &
– – –
900V AC 1 minute
≥
3.2mm
Canada
* 110 to 130 V Europe
≥
4 M
Ω
/500 V DC 3 kV AC 1 minute
≥
3 mm (d)
200 to 240 V Australia
≥
6 mm (d')
(a: Power cord)
AC Line Voltage Region
Earth Ground
Load Z Leakage Current ( i )
(B) to:
100V Japan
i
≤
1 m A rms Exposed accessible
parts
110 to 130 V USA &
i
≤
0.5 m A rms Exposed accessible
parts
i
≤
0.7 m A peak Antenna earth
110 to 130 V Europe
i
≤
2 m A dc terminals
200 to 240 V Australia
i
≤
0.7 m A peak
Other terminals
i
≤
2 m A dc
Fig. 1
1k
1.5k
1.5kµF
2k
50k
d
Primary circuit termimals
Chassis
d'
a
Z
Exposed
accessible
part
AC Voltmter
(high impedance)
Earth Ground
power cord plug prongs
B
SPECIFICATIONS
SYSTEM
Video signal PAL standard colour
PAL/SECAM
channel memory 40 positions
UHF output signal 30-39 CH (adjustable)
73±3dBuV
VIDEO
Input: Video Line in 1.0Vp-p
75 ohms unbalanced, sync.
negative
Output: Video line out 75 ohms unbalanced, sync.
negative
Signal to noise ratio More than 43dB (SP)
Horizontal resolution 230 lines
AUDIO
Input: Audio Line in Impedance: more than
50Kohm
–8 dBm, unbalanced
Output: Audio line out Impedance: less than 1Kohm
–6 dBm, unbalanced
Frequency response 100 Hz-8KHz
Signal to noise ratio More than 38 dB
Audio Distortion Less than 3% (SP)
TAPE TRANSPORT
Tape width 12.65mm (1/2")
Tape speed 23.39mm/sec
Maximum recording time 180 min, with E-180 tape (EP)
FF. REW time Approx 4 min (E-180)
GENERAL
Power requirements AC 230V 50Hz
Power consumption 17W
DIMENSIONS
Set size (WxHxD) 360x90x312 mm
Carton size (WxHxD) 445x180x412 mm
Weight (gross) 5.4Kg
Channel coverage
SYSTEM
PAL,SECAM-B/G
PAL-I/I
PAL,SECAM-B/G
PAL,SECAM-B/G,D/K WIDE BAND
PAL-I PAL-B/H
HYPER BAND
VHF Ch 2~12 VHF Ch 2~12 VHF LOW
UHF Ch 21~69 UHF Ch 21~69 Ch 1A~5
Channel CATV Ch X,Y,Z CATV Ch X,Y,Z UHF Ch 21~69 VHF High
SI~S41 SI~S20 Ch 5A~N11
UHF Ch 21~69
IN/OUTPUT JACK TYPE
Model EUROPE
Asia
South Africa
Australia
JACK
SCART Type
RCA JACK
TYPE (PHONE JACK)