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BKM-120D/127W/129X/142HD
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Section 7
Diagrams
Note:
• Parts marked “ * ” differ according to the model/destination. Refer
to the mount table for each function.
• The parts marked “ # ” on schematic diagrams are not mounted.
• All capacitors are in µF unless otherwise noted. pF: µµF 50WV or
less are not indicated except for electrolytics.
• All electrolytics are in 50 V unless otherwise specified.
• : fusible resistor
• : nonflammable resistor
• ∆ : internal component
• : panel designation and adjustment for repair
• Caution when replacing chip parts
New parts must be attached after removal of the chip.
Be careful not to heat the minus side of a tantalum capacitor,
because it is easily damaged by the heat.
Reference information
RESISTOR RN : METAL FILM
RC : SOLID
FPRD : NONFLAMMABLE CARBON
FUSE : NONFLAMMABLE FUSIBLE
RS : NONFLAMMABLE METAL OXIDE
RB : NONFLAMMABLE CEMENT
RW : NONFLAMMABLE WIREWOUND
: ADJUSTMENT RESISTOR
COIL LF-8L : MICRO INDUCTOR
CAPACITOR TA : TANTALUM
PS : STYROL
PP : POLYPROPYLENE
PT : MYLAR
MPS : METALIZED POLYESTER
MPP : METALIZED POLYPROPYLENE
ALB : BIPOLAR
ALT : HIGH TEMPERATURE
ALR : HIGH RIPPLE
[Measuring conditions, voltage and waveform]
• A voltage value is the reference value between the measurement
point and the earth, when the RGB color bar signal are received
from the color bar generator (digital multi-meter used: 10 M ohms/
V DC).
• Unit of voltage is V (volt).
• : B+line
: B– line
• Voltage variations may occur due to normal production tolerances.
• Circled numbers indicate the reference waveform.
• : Signal path.
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