LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON THE FOLLOW-
ING PAGES:
1. CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE
FUSE.
2. CAUTION:
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, first check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply. Otherwise it may cause some compo-
nents in the power supply circuit to fail.
3. Note:
(1) Do not use the part number shown on the drawings for ordering. The correct part number is shown in the
parts list, and may be slightly different or amended since the drawings were prepared.
(2) To maintain original function and reliability of repaired units, use only original replacement parts which are
listed with their part numbers in the parts list section of the service manual.
4. Voltage indications for PLAY and REC modes on the schematics are as shown below:
< DVD Section >
< VCR Section >
Unit: Volts
123PLAY mode123 PLAY mode
5.0 5.0 STOP mode5.0 5.0 REC mode
(2.5)(2.5) DVD mode
The same voltage forThe same voltage for< >
both PLAY & STOP modes Indicates that the voltageboth PLAY, REC & DVD Indicates that the voltage
is not consistent here.modesis not consistent here.
5. How to read converged lines
1-D3
3
Distinction Area1-B1
AREA D3
Line Number
(1 to 3 digits)
2AREA B1
Examples:
1. "1-D3" means that line number "1" goes to area "D3".1-D3
1
2. "1-B1" means that line number "1" goes to area "B1".
ABCD
6. Test Point Information
: Indicates a test point with a jumper wire across a hole in the PCB.
: Used to indicate a test point with a component lead on foil side.
: Used to indicate a test point with no test pin.
: Used to indicate a test point with a test pin.
S-2 |
ACEC
HITACHI
