DESCRIPTION OF SCHEMATIC DIAGRAM
NOTE:
The unit of resistance “ohm is omitted
=
ohms,
Meg ohm).
resistors are
watt, unless otherwise noted.
capacitors are
unless otherwise noted P
The diodes, whose parts code is not described, are the
All resistors are
unless otherwise noted.
VOLTAGE MEASUREMENT CONDITIONS:
Voltages without parenthesis measured with
B & W
or Color Signal.
The voltage in parenthesis represents the value measured
with no signal.
All the voltages were measured by using a high impedance
voltmeter.
WAVEFORM MEASUREMENT CONDITIONS:
The
bar signal applied to the
1 is 1
The tuner
voltage is approximately
S A F E T Y N O T E :
DISCONNECT THE AC PLUG FROM THE AC OUTLET BEFORE
PARTS.
SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS
POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS
OPERATING.
SURE TO REPLACE THESE PARTS WITH SPECIFIED ONES FOR
S E R V I C E P R E C A U T I O N :
The area enclosed by this line
is direct/y connected
with AC Mains Voltage.
When servicing the area, connect an isolating transformer
between TV receiver and AC line to eliminate hazard of
electric shock.
SOLID STATE DEVICE BASE DIAGRAMS
BASE
COLLECTOR
COLLECTOR
BASE
DRAIN
GATE
SOURCE
E
E
EMITTER
G A T E
BASE
I
1
I
I
I
I
1
1
I
I
I
I
I
I
I
1
I
I
I
I
I
I
---
1
9
1
L
1
I
-
-
-
-
-
-
-
-
-
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Summary of Contents for 21N52-E1
Page 21: ...PRINTED WIRING BOARD ASSEMBLIES PWM A Wiring Side PWM B Wiring Side 1 I 2 I 3 I 4 I 5 I 6 21 ...
Page 22: ...PWB A Wiring Side I 7 I 8 9 I 10 11 12 22 ...
Page 25: ...PRINTED WIRING BOARD ASSEMBLIES Continued IJ PWB D Wiring Side 1 I 2 I 3 I 4 I 5 I 6 1 25 ...
Page 29: ...SCHEMATIC DIAGRAM SUB CIRCUIT 29 ...
Page 31: ...SCHEMATIC DIAGRAM MAIN CIRCUIT ...
Page 33: ...BLOCK DIAGRAM MAIN CIRCUIT 1 1 2 I 3 4 I 5 I 6 3 3 ...
Page 34: ...1 7 8 9 I 10 11 I 12 I 34 ...
Page 35: ...BLOCK DIAGRAM SUB CIRCUIT ADG COIL 7 1 2 1 3 4 I 5 I 6 I 35 ...
Page 36: ...7 I 8 9 10 11 12 36 ...
