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Section 8
Diagrams
8-1. Schematic Diagrams and
Printed Wiring Boards
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
: AJUSTMENT 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 measure-
ment point and the earth, when signal is received from JME-
UA200 (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.
•
: Signal path.
The components identified marked ! are
critical for safety.
Replace only with the part number specified.
Les composants identifiés par la marque !
sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifié.
LDU-1530/1540/1515
8-1
8-1
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