Pioneer M-790 Manuel d'entretien - Page 7

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M-790

3. SCHEMATIC AND PCB CONNTCTION DIAGRAMS

NOTE FOR SCHEMATIC DIAGRAMS

(Type 1A)

1. When ordering service parts, be sure to refer to

"PARTS

LIST of EXPLODED

VIEWS"

or "PCB

PARTS

LIST".

2. Since these are basic circuits, some

parts of them

or the

values of some components

may be changed for improve

ment.

3. RESISTORS:

Unit: k:kQ, M:MQ, or Q unless otherwise noted.

Rated power:

1/4W,

1/6W,

1/8W,

1/10W

unless

otherwise

noted.

Tolerance: (F): 1%, (G): 2%, (K): £10%, (M): +20% or +5% un-

less otherwise noted.

4. CAPACITORS:

Unit: p:pF or uF unless otherwise noted.

Ratings: capacitor (uF)/voltage(V) unless othrewise noted.

Rated voltage: 50V except for electrolytic capacitors.

5. COILS:

Unit: m:mH or pH unless otherwise noted.

6. VOLTAGE

AND CURRENT:

: Signal voltage at rated output.

ore V:

DC voltage (V) at no input signal unless otherwise noted.

Value in (

) is DC voltage at rated power.

o mA or — mA:

DC current at no input signal unless otherwise noted.

7. OTHERS:

*@ or@

: Adjusting point.

: Measurement point.

* The A\ mark found on some component parts indicates the im-

portance of the safety factor of the parts. Therefore, when re-

placing, be sure to use parts of identical designation.

8. SCH-C ON THE SCHEMATIC DIAGRAM:

¢ SCH-C indicates the drawing number of the schematic dia

gram. (SCH stands for schematic diagram.)

9. SWITCHES

(Underline indicates switch position):

H.P ASSY

$201

: SPEAKERS(A / A+B)