CHARTS AND DIAGRAMS
NOTES OF SCHEMATIC DIAGRAM4. Voltage measurement
1) Regulator (DC/DC CONV) circuits
Safety precautionsREC : Colour bar signal.
The Components indentified by the symbol!arePB : Alignment tape (Colour bar).
critical for safety. For continued safety, replace safety?: Unmeasurable or unnecessary to measure.
critical components only with manufacturer's recom-2) Indication on schematic diagram
mended parts.Voltage indications for REC and PB mode on the sche-
matic diagram are as shown below.
1. Units of components on the schematic diagram
Unless otherwise specified.
123
1) All resistance values are in ohm. 1/6 W, 1/8 W (refer to
REC mode2.51.8
parts list).(5.0)
Chip resistors are 1/16 W.
PB and REC modes
K: K&(1000&), M: M& (1000K&)(Voltage of PB and REC modes
PB mode
are the same)
2) All capacitance values are in ?F, (P: PF).
3) All inductance values are in ?H, (m: mH).
Note: If the voltages are not indicated on the schematic
4) All diodes are 1SS133, MA165 or 1N4148M (refer to parts
list).diagram, refer to the voltage charts.
Note: The Parts Number, value and rated voltage etc. in
the Schematic Diagram are for references only. 5. Signal path Symbols
When replacing the parts, refer to the Parts List.
The arrows indicate the signal path as follows.
2. Indications of control voltageNOTE : The arrow is DVC unique object.
AUX : Active at high.
Playback signal path
AUX or AUX(L) : Active at low.
Playback and recording signal path
Recording signal path
3. Interpreting Connector indications(including E-E signal path)
Capstan servo path
1
2Removable connector
Drum servo path
3
(Example)
1
2Wire soldered directly on boardR-YPlayback R-Y signal path
3
Y
Recording Y signal path
1
2Non-removable Board connector
6. Indication of the parts for adjustments
3
The parts for the adjustments are surrounded with the circle
as shown below.
1
2Board to Board
3
4
Connected pattern on board
The arrows indicate signal path
7. Indication of the parts not mounted on the circuit board
Note: For the destination of each signal and further line
?OPEN? is indicated by the parts not mounted on the circuit
connections that are cut off from the diagram,
board.
refer to "BOARD INTERCONNECTIONS"
R216
OPEN
2-1(No.YF075B) |