•Waveforms
– MAIN Board –
– DISPLAY Board –
Note on Printed Wiring Board:
•X : parts extracted from the component side.
•Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing. (The other layers' patterns are not indicated.)
Caution: |
|
Pattern face side: | Parts on the pattern face side seen from |
(Conductor Side) | the pattern face are indicated. |
Parts face side: | Parts on the parts face side seen from |
(Component Side) | the parts face are indicated. |
|
|
•DISPLAY board is
However, the patterns of layers 2 and 3 have not been included in this diagrams.
•Abbreviation
SE | : South European model |
•Please refer to servicing notes (page 3) for system of TYPE A and B.
Note on Schematic Diagram:
•All capacitors are in ∝F unless otherwise noted. pF: ∝∝F 50 WV or less are not indicated except for electrolytics and tantalums.
•All resistors are in Ω and 1/4 W or less unless otherwise specified.
•f : internal component.
•C : panel designation.
•A : B+ Line.
•U : B+ Line.
•H : adjustment for repair.
•Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.
•Voltages and waveforms are dc with respect to ground
under
( | ) : MW |
[ | ] : LW |
〈〈 〉〉 : TAPE PLAYBACK
•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances.
•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc- tion tolerances.
•Circled numbers refer to waveforms.
•Signal path. F : FM f : MW/LW
L : BUS AUDIO IN
E : TAPE PLAY
•Abbreviation
SE | : South European model |
•Please refer to servicing notes (page 3) for system of TYPE A and B.
1IC700 5 OSCI
2.4
231 ns
2IC601 ud X1A
3.1
305∝s
3IC601 od X1
5.5
272 ns
4IC607 ih EXTAL
3
5IC901 oh OSC
3.2 |
22.8 ∝s |
6IC902 oh OSC
3.2 |
22.8 ∝s |
54 ns
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