promethean PRM-20, Руководство по обслуживанию

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A
KM5-000, KM5-0(S)00
A
Parts description and reading in schematic diagram
1. The parts specification of resistors, capacitors and
coils are expressed in designated code. Please check
the parts description by the following code table.
2. Some of transistors and diodes are indicated in mark
for the substitution of parts name. Please check the
parts name by the following code table.
3. Voltages and waveforms were taken with a video color
bar signal(1Vp-p at 75 ohms terminated) and controls
to normal.
4. Voltages were taken with a high-impedance digital
voltmeter.
Example 2000 K K 1000 BG
Characteristic
Example 160 E M 10
Capacitance value
Tolerance
Type
Rated voltage
Excepting electric capacitors, all
capacitance values of less than 1
are expressed in
µ
F and more
than 1 are in pF.
Example L2 C1 4R7 K N
Tolerance
Inductance value
Manufacture code
Unique code
Mark Material
E Electrolytic
P Electrolytic (non-polarized)
C Ceramic (temperature compensation)
K Ceramic
F Polyester
N Polypropylene
M Metalized polypropylene
H Metalized polypromylar
B Ceramic (semiconductor)
G Metalized polyestel
Y Composite film
S Styrol
T Tantalum oxide solid electrolytic
U Organic semiconductive electrolyte
D Electric double layer electrolytic
Mark Tolerance
A not specified
B
±
0.1
C
±
0.25
D
±
0.5
F
±
1
G
±
2
E
±
2.5
H
±
3
J
±
5
K ± 10
M
±
20
N
±
30
P +100 -0
Q +30 -10
T +50 -10
U +75 -10
V +20 -10
W +100 -10
X +40 -20
Y +150 -10
Z +80 -20
Mark Tolerance (nH) Mark Tolerance (%)
C
±
0.25 G
±
2
D
±
0.5 J
±
5
S ± 0.3 K ± 10
A
±
0.2 L
±
15
M
±
20
Coil Reading
Capacitor Reading
Example 1/2 D J 10K B
Example 6 W K 8.2
Example 1/2 C K 1M
Resistor Reading
Characteristic
Z (Carbon fuse)
B (Non-burnable)
Resistance value
Tolerance (see below table)
Material (see below table)
Rated wattage (W)
K indicates in K
Ω
M indicates in M
Ω
Note: Resistor which is indicated with resistance value only are
1/6W carbon resistor. Resistor which is indicated with materi-
al, tolerance and value are 1/4W rated wattage.
Mark Material
D Carbon
N Metal film
S Oxide metal film
C Solid
G Metal glaze
W Wire wounding or cement
H Ceramic
F Fusible
Mark Tolerance
A
±
0.05
B
±
0.1
C ± 0.25
D
±
0.5
F
±
1
G
±
2
J ± 5
K
±
10
M
±
20
P +5 -15
Z used in 0 ohm
Tolerance table
Material table
Material table
Mark Type number
R 1S2076A,1S2473,1N4148
AA 1S2076A,1S2473,1SS133,1N4148
Diode
Mark Type number
-- 2SC536 2SC945A 2SC1815 2SC1740S
AD NF, NG PA, QA Y, GR Q, R, S
AE NF, NG PA, QA, RA O, Y, GR Q, R, S
Transistor
(1) NPN type
Diode/Transistor Type Reading
Mark Type number
-- 2SA608 2SA564A 2SA1015 2SA933S
AB NF R Y, GR R
AC NF Q, R O, Y, GR Q, R
(2) PNP type
Mark Type number
-- 2SA1179/N 2SA1037K 2SA1037AK 2SC2812/N 2SC2412K
AJ M6, M7 R, S R, S
AH L6, L7 R, S
(3) Chip type
Tolerance table