Notes When Using Service Manual - Hitachi DV-DS163E Service Manual

Safety Precaution for Repair > Notes When Using Service Manual

1-6 Notes When Using Service Manual

(1) Value units used in parts list
Certain symbols are indicated as shown below for value units of resistors, capacitors and coils in
parts list. When you read them, note the following regular indications:
Parts Indication in list
Resistor KOHM .......................................... k
Capacitor UF ................................................. F
PF.................................................. pF
Coil UH ................................................ H
MH ................................................ mH
(2) Values in schematic diagrams
The values, dielectric strength (power capacitance) and tolerances of the resistors (excluding
variable resistors) and capacitors are indicated in the schematic diagrams using abbreviations.
Certain symbols are indicated for value units: When you read them note the regular indications in
tables below:
[Resistors]
Item
Value No indication ................................
K.................................................... k
M ................................................... M
Tolerance No indication ................................ ±5%
(All tolerances other than ±5% are
indicated in schematic diagrams)
Power No indication ................................ 1/8W
capacitance (1/16 W for leadless resistors with no
indication)
All capacitances other than the above
are indicated in schematic diagrams.
(3) Identifying sides A/B in circuit board diagrams
1) Board with pattern on one side only and parts on both sides:
Side A: Shows discrete parts.
Side B: Shows leadless parts, viewed from the pattern side.
2) Board with patterns and parts on both sides:
Sides A and B are identifi ed without any predetermined rules.
(4) Indicating model names
The indication of models is defi ned as follows:
1) The common parts of model names are omitted.
Example: When indicating VM-D975LA and VM-D875LA:
2) If there is no difference in models going to different destinations, the indication of destination is
omitted.
Example: When indicating DZ-MV350E(AU) and DZ-MV350E(SW): DZ-MV350E
Regular indication
Indication
VM-D975LA/D875LA, D975LA/D875LA
1 - 5
[Capacitors]
Item
Value No indication ................................ F
P .................................................... pF
Dielectric No indication ............................... 50V
strength (All dielectric strengths other than
50 V are indicated in schematic
diagrams)
[Coils]
Item
Value .................................................... H
m ................................................... mH
Indication
Indication