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KV-25.DXR:
RM·'7271ARM,X3.tJ
4-5.
SCHEMATIC DIAGRAMS AND .PRINTED WIRING BOARDS
Note: The components identified by shading and mark
ft
are critical for safety.
Replace only with
part number specified.
Note:
•
All capacitors are in µF unless otherwise noted. pF : µµF
50WV or less are not indicated except for electrolytics
•
All resistors are in ohms,
¼
W unless otherwise
noted.
k.\1 : 1000n. Mn : 1 000k.\1
• ffi-:
nonflammable resistor.
•
6
:
internal component.
• c==i :
panel designation.
•
All variable and adjustable
resistors have characteristic
curve B, unless otherwise noted.
The components
identified by
8
in this manual have
been carefully factory-selected
for each set in order to
satisfy
regulations
regarding
X-ray
radiation.
Should
replacement
be required,
replace only with the value
originally used.
•
When replacing components
identified by
(.j ,
make the
necessary adjustments
indicated.
If results do not meet
the specified value, change the component
identified by
8
and repeat the adjustment
until the specified value is
achieved.
(Refer
to HV HOLD DOWN and BLANKING
Adjust-
ments on page 27 - 28).
•
When replacing the part in below table, be sure to per-
form the related adjustment.
•
•
Part replaced (
l.i )
Adjustment
IC500, 0512, 0514,
0515, 0518, 0522,
R533, R560, R570
HV HOLD
R571, R572, R573,
or. D board
DOWN
R574, R582, R583,
ADJUSTMENT
R 1500, R 1502.
(R573)
R1503, R1504,
R1522, R1530
0713, 0714, 0707,
l
R728, R759, R760,
on C board
R761, R762, R763,
R770, R774, R775,
BLANKING
0507, 0500, 0501,
1
ADJUSTMENT
R532, R534, R536,
on D board
(R534)
R584
J
02012, R2141,
}
on B board
R2143, R2144
Voltages are de with respect to ground unless otherwise
noted.
Readings
are taken with a 10M.\1 digital multimeter .
• C=:J :
adjustment
for repair.
•
Readigns are taken with color-bar signal input.
•
Voltage variations may be noted due to normal produc-
tion tolerances.
•
g
B+ bus .
•
~:x~
:
8- bus .
•
Circled numbers are waveform references.
A
'
B
C
D
E
F
G
H
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