Kenwood FG-273 Service Manual page 10
Function generator
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Also See for FG-273:
- Instruction manual (15 pages) ,
- Instruction manual (15 pages) ,
- Service manual (14 pages)
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SCHEMATIC DIAGRAM
MAIN BOARD ~ 25-25733 -1L
<9
Mee
4
AC_ POWER
-—__ - ——_ - ———_--
4
PARTIAL 25-25737- V 3
"
|
+15V_REGULATOR
320
+25V
LINE VOLTAGE
SELECT
71
+
toy=4
082
RZ
bas alin me
083M
82v
TMT Oty
:
INGO! = Je—-+6.6V
220V
4:
R10
SRIOSS RI06: sgn
out
41.2F
SUL2FS
WF
SL99F $49
a
aa
si
si
@ 50
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aw
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4008
-156V
-28v
1-15V REGULATOR
+5V_ REGULATOR
+19.4V_ REGULATOR
vey
[im Troon [rox [ie [roo Tio Ts]
Lae
Q29
a18
.
+25V
1
a
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up
ov 1
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R22 6.99KF
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ee
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225
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4
S
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CMOS CIRCUIT
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R56
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R27 .99KF
=
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PARTIAL
WAVE GENERATOR]
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sec | sie | sée | s% J sac | soc | sive , C7000
25-28734-1H
WAVE GENERATOR]
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RIS9 470
COUNTER
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INPUT
1
1
1N4148
LED, RED
2SCIE74K
2SA1015GR
7426N
1N4747A
1N4148
2N3906
2SC1815GR
3030
1N4148
1N4001
2SC1674K
7805
74)
LED,RED
1N4001
2N2219A
2SA1015GR
358
1N4148
RD8.2EB2
*
2N2905A
2N5485
741
LED, RED
2SC1815GR
7815
2SC1815GR
7216D
DISPLAY
.
2SA1015GR
TIP32B
741
14066
1N4148
2SC181SGR
8050C
308
1O1N6P
LED, RED
2N5485
2N3906
3086
741
1N4148
2SA101SGR
2SC1815GR
7420N
7
.
_
a6
12
COACEETACT
LIZZ
ane
O.5V/div
O0.2ms/div
0.5 V/div
O.2ms/div
FUNCTION
= SINE
Van
sand
mwa
ESNeE
4EZ2%
PT
O.5V/div
0.2me/div
@)
[LINEAR]
SWEEP
RATE
= CW
(3)
Log]
SWEEP
RATE
+ CCW
5V/div
ls/div
INPUT
SIGNAL
f=1kHz
PT TRY
ET I KY |
ERSREAERee
re eT Tr
O.1V/div
O.2ms/div
O.5V/div
O,2me/div
FUNCTION
= SQUARE
O.5V/div
O0,.2ms/div
PFALT
ZNCIZE NT
EAT
CNZCCON
1 a
O.1V/div
O.2me/div
O.5V/div
O0.2me/div
(1)
FUNCTION
+ SINE
{i2)
AMPLITUDE
= MAX
SWEEP
RATE
: CCW
Lv 1
Bae Aes eS
Pe Ie
D4nnE
5SV/div
O0.2ms/div
2V/div
1sfdiv
(33)
{Lo@]
(3)
CLINEAR]
SWEEP
RATE
+ CW
SWEEP
RATE
t CCW
pi ATA TAT AT
TANT
AN EN TN TT
AUFARUWAREPARUPARUEA
AAA
Y
7
1V/div
0.2 ms/div
:
1V/div
0.05 we/div
13
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