DP-IF5000
– 25 –
– 26 –
5-8. PRINTED WIRING BOARD — AMPLIFIER SECTION —
Note:
•
X
: parts extracted from the component side.
•
b
: Pattern from the side which enables seeing.
5-9. SCHEMATIC DIAGRAM — AMPLIFIER SECTION —
RV901
PHONES
LEVEL
-2
R
-1
L
1
A
B
C
D
E
2
3
4
5
6
Note:
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 9 V and fed with regulated dc power
supply from external power voltage jack.
• Voltage is dc with respect to ground under no-signal
condition.
no mark : POWER ON
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Signal path.
F
: ANALOG
IC901
D-4
Q901
B-2
Q902
B-2
• Semiconductor
Location
Ref. No.
Location
(Page 15)
(Page 22)
(Page 23)
(Page 17)