Sharp DT-100, Service Manual

Page: 44 / 112

44
DT-100
VOLTAGE MEASUREMENT CONDITION:
1. Voltages at test points are measured at the
supply voltage of AC 220V. Signals are fed by a color
bar signal generator for servicing purpose and the
above voltages are measured with a 20k ohm/V tester.
WAVEFORM MEASUREMENT CONDITION:
1. Waveforms at test points are observed at the supply
voltage of AC 220V. Signals are fed by a color bar
signal generator for servicing purpose.
INDICATION OF RESISTOR & CAPACITOR:
RESISTOR
1. The unit of resistance “
Ω
” is omitted.
(K=k
Ω
=1000
Ω
, M=M
Ω
).
2. All resistors are ± 5%, unless otherwise noted.
(J= ± 5%, F= ± 1%, D= ± 0.5%)
3. All resistors are 1/10W, unless otherwise noted.
4. All resistors are Carbon type, unless otherwise noted.
C
: Solid
W
: Cement
S
: Oxide Film
T
: Special
N
: Metal Coating
CAPACITOR
1. All capacitors are
µ
F, unless otherwise noted.
(P=pF=
µµ
F).
2. All capacitors are 50V, unless otherwise noted.
3. All capacitors are Ceramic type, unless otherwise
noted.
(ML): Mylar (TA): Tantalum
(PF): Polypro Film (ST): Styrol
CAUTION:
This circuit diagram is original one, therefore there may be a
slight difference from yours.
SAFETY NOTES:
1.DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
2.SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
IMPORTANT SAFETY NOTICE:
PARTS MARKED WITH “
å
” (
) A R E
IMPORTANT FOR MAINTAINING THE SAFETY OF
THE SET. BE SURE TO REPLACE THESE PARTS
WITH SPECIFIED ONES FOR MAINTAINING THE
SAFETY AND PERFORMANCE OF THE SET.
DESCRIPTION OF SCHEMATIC DIAGRAM