94
KF-42WE620/50WE620
KF-42WE620/50WE620
SECTION 3: DIAGRAMS
3-1. CIRCUIT BOARDS LOCATION
3-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS INFORMATION
All capacitors are in µF unless otherwise noted. pF : µµF 50WV or
less are not indicated except for electrolytics and tantalums.
All electrolytics are in 50V unless otherwise specifi ed.
All resistors are in ohms. k
Ω
=1000
Ω
, M
Ω
=1000k
Ω
Indication of resistance, which does not have one for rating
electrical power, is as follows:
Pitch : 5mm
Rating
electrical
power
:
1
/
4
W
1
/
4
W in resistance,
1
/
10
W and
1
/
16
W in chip resistance.
: nonfl ammable resistor
: fusible resistor
: internal component
: panel designation and adjustment for repair
: earth ground
: earth-chassis
All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
Readings are taken with a color-bar signal input.
Readings are taken with a 10M
Ω
digital multimeter.
Voltages are DC with respect to ground unless otherwise noted.
Voltage variations may be noted due to normal production
tolerances.
All voltages are in V.
S : Measurement impossibility.
: B+line.
: B-line. (Actual measured value may be different).
: signal path. (RF)
Circled numbers are waveform references.
Divided schematic diagram:
Schematic diagrams of A, BB, BC, M, and U boards are divided into
several pieces. Information to where the line is to be connected is
printed at the end of each line.
For example: [TO A1/3, A2/3_1] means the line is connected to Ref.
No. 1 of A (1 of 3) and A (2 of 3) schematic diagrams.
TO A1/3,A2/3_1
Ref. No.
Name of divided schematic diagram
A
F
G1
G3
U
C2
AU
RF antenna
switch
Power supply
block
H3
UD
T
DIC2
H2
H4
H1
C1