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KV-21PS2/21RS22C/21RS50/21RS50C/21SD2 (RM-Y145)
KV-21PM2/21R22/21R22C/21RD2 (RM-Y146)
6-3.
Printed Wiring Boards and Schematic
Diagrams
Note:
•
All capacitors are in pF unless otherwise noted.
pF: (ijiF 50WV or less are not indicated except
for electrolytic and tantalums.
•
All electrolytics are 50V unless otherwise specified
• Indication of resistance, which does not have one for
rating electrical power, is as follows:
Pitch: 5mm
Rating electrical power 1/4W
• All resistors are in ohms.
KQ=1000£>, MQ=1000KQ
• -S- nonflammable resistor.
•
A: internal component.
•
I
): panel designation and adjustment for repair.
• All variable and adjustable resistors have charac¬
teristic curve B, unless otherwise noted.
• The components identified by 3 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.
Part replaced (3)
Adjustment
(B)
IC301, IC502, IC601, D505,
D506, D507, D510, DY, C503,
C511, C513, C528, R511.R519,
R520, R523, R525, R527, R559,
R560, R617, R618, T504 (FBT)
HV HOLD-DOWN
(R525)
IC001, IC601, R030, R617,
R618, R629, R630, R651,
R652, R654, R655, R656
B+ VOLTAGE
CONFIRMATION
All voltages are in V.
Voltage is DC with respect to ground unless otherwise
noted.
Readings are taken with a 10MQ digital multimeter.
Readings are taken with a color-bar signal input.
Voltage variations may be noted due to normal produc¬
tion tolerance.
Circled numbers are waveform references.
: B + Line
: B - Line
: signal path
Reference Information
RESISTOR
COIL
CAPACITOR
RN
METAL FILM
RC
SOLID
FPRD
NON FLAMMABLE CARBON
FUSE
NON FLAMMABLE FUSIBLE
RW
NON FLAMMABLE WIREWOUND
RS
NON FLAMMABLE METAL OXIDE
RB
NON FLAMMABLE CEMENT
*
ADJUSTMENT RESISTOR
LF-8L
MICRO INDUCTOR
TA
TANTALUM
PS
STYROL
PP
POLYPROPYLENE
PT
MYLAR
MPS
METALIZED POLYESTER
MPP
METALIZED POLYPROPYLENE
ALB
BIPOLAR
ALT
HIGH TEMPERATURE
ALR
HIGH RIPPLE
• When replacing components identified by □ make the
necessary adjustments indicated. If results do not
meet the specified value, change the component
identified by H and repeat the adjustment until the
specified value is achieved.
(Refer to R525 on pages 14 & 15).
• When replacing parts in the table below be sure to
per¬
form the related adjustment.
Note: The symbol IEEE display is on the component side.
The components identified by shading and mark A are
critical for safety. Replace only with part number
specified.
The symbol
indicates fast operating fuse.
Replace only with fuse ot same rating as marked.
— 22 —
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