3
34N-WF5H
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IMPORTANT SERVICE SAFETY PRECAUTION
(Continued)
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 materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical
insulators and etc.
3. To be sure that no shock hazard exists, check for
leakage current in the following manner.
•
Plug the AC cord directly into a 120 volt AC outlet,
(Do not use an isolation transformer for this test).
•
Using two clip leads, connect a 1.5k ohm, 10 watt
resistor paralleled by a 0.15
µ
F capacitor in series with
all exposed metal cabinet parts and a known earth
ground, such as electrical conduit or electrical ground
connected to earth ground.
•
Use an AC voltmeter having with 5000 ohm per volt,
or higher, sensitivity to measure the AC voltage drop
across the resistor.
BEFORE RETURNING THE RECEIVER
(Fire & Shock Hazard)
Before returning the receiver to the user, perform
the following safety checks.
•
Connect the resistor connection to all exposed metal
parts having a return to the chassis (antenna, metal
cabinet, screw heads, knobs and control shafts,
escutcheon and etc.) and measure the AC voltage
drop across the resistor.
AII checks must be repeated with the AC ine cord
plug connection reversed. (If necessary, a non-
polarized adapter plug must be used only for the
purpose of completing these check.)
Any current measured must not exceed 0.5 milliamp.
Any measurements not within the limits outlined
above indicate of a potential shock hazard and
corrective action must be taken before returning the
instrument to the customer.
For continued protection, replacement parts must be
identical to those used in the original circuit. The use of
substitute replacement parts which do not have the same
safety characteristics as the factory recommended
replacement parts shown in this service manual, may
create shock, fire, X-radiation or other hazards.
1.5k ohm
10W
0.15
µ
F
TEST PROBE
TO EXPOSED
METAL PARTS
CONNECT TO
KNOWN EARTH
GROUND
AC
VOLTMETER
SAFETY NOTICE
Many electrical and mechanical parts in television
receivers have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarily increased by using replacement components
rated for higher voltage, wattage and etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by "
å
"
and shaded areas in the
Replacement Parts Lists and
Schematic Diagrams.
Содержание 34N-WF5H
Страница 6: ...6 34N WF5H DIMENSIONS Units mm inches Top View Front View Side View ...
Страница 26: ...27 34N WF5H 26 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT ...
Страница 27: ...29 34N WF5H 28 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM 1 2 ...
Страница 28: ...31 34N WF5H 30 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM 2 2 ...
Страница 30: ...33 34N WF5H 17 16 19 18 15 14 13 12 11 10 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit ...
Страница 31: ...35 34N WF5H 34 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM SIGNAL Unit 1 5 ...
Страница 32: ...37 34N WF5H 36 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM SIGNAL Unit 2 5 ...
Страница 33: ...39 34N WF5H 38 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM SIGNAL Unit 3 5 ...
Страница 34: ...41 34N WF5H 40 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM SIGNAL Unit 4 5 ...
Страница 35: ...43 34N WF5H 42 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM SIGNAL Unit 5 5 ...
Страница 36: ...45 34N WF5H 44 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM POWER Unit ...
Страница 37: ...47 34N WF5H 46 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM TUNER Unit 1 2 ...
Страница 38: ...49 34N WF5H 48 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM TUNER Unit 2 2 ...
Страница 39: ...51 34N WF5H 50 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM YUV SW Unit ...
Страница 40: ...53 34N WF5H 52 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MICOM Unit ...
Страница 41: ...55 34N WF5H 54 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM ZOOM Unit 1 3 ...
Страница 42: ...57 34N WF5H 56 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM ZOOM Unit 2 3 ...
Страница 43: ...59 34N WF5H 58 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM ZOOM Unit 3 3 ...
Страница 44: ...61 34N WF5H 60 12 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM Y D 3D Unit ...
Страница 45: ...62 34N WF5H 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM AC FILTER Unit AC FILTER ...
Страница 46: ...63 34N WF5H 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CONTROL Unit DUNTKA098DE01 ...
Страница 47: ...64 34N WF5H 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM TERMINAL Unit ...
Страница 49: ...66 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB A SIGNAL Unit A Side ...
Страница 50: ...67 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB A SIGNAL Unit B Side ...
Страница 51: ...68 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB K ZOOM Unit A Side PWB K ZOOM Unit B Side ...
Страница 52: ...69 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB C POWER Unit Wiring Side ...
Страница 53: ...70 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB E TUNER Unit A Side PWB J MICOM Unit A Side ...
Страница 54: ...71 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB E TUNER Unit B Side PWB J MICOM Unit B Side ...
Страница 55: ...72 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB L Y C 3D Unit A Side PWB L Y C 3D Unit B Side ...
Страница 56: ...73 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB D AC FILTER Unit Wiring Side ...
Страница 57: ...74 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB H YUV SW Unit A Side PWB H YUV SW Unit B Side ...
Страница 58: ...75 34N WF5H 6 5 4 3 2 1 A B C D E F G H PWB F CONTROL Unit Wiring Side ...