Abell A-80 - Page 46

A-80 UHF SERVICE MANUAL
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1 2 3 4 56
A B C D
6
54321
D
C B A
AF MUTE
R448
1K D
R416 10R
C435 470P
C424 0.047U
GND
R436 0
TI
AF -IN RXC W/ N MOD TI AF MIC AF MUTE
TXC
AF MUTE AF -IN AF TI RXC MOD W/ N MIC
VR4 00 47K(φ3)
R400 22K
R415 5.6K
R401
1K
+
C400 2.2U
R420 2K
R409 6.8K
R408 33K
R410 51K
C405 0.047U
C404 0.01U
1 2 3
GND
4
5 6 7
VCC
8
IC 4 0 0NJM21 00
C406 10P
L40 0
磁珠
C416 470P
R412 15K
R411 15K
+
C407 4.7U
C417 0.022U
R421 1.5K
R422 750K
C408 0.022U
C420 1000P
C418 0.1U
C409 0.027U
R423
18K
R424 820
+
C419 2.2U
C421 560P
C410 0.1U
L401 磁珠
R425 100K
MIC
+
C411 10U 6.3V
R414 1.8K
R413 470
Q4 03 2SC4919
D4 00 1SS372
C412 0.01U
C413 680P
C414 680P
C401 3300P
C403 3300P
R402 3.3K
R417 10K
R403 1.8M
R404 33K
R405 33K
R418 10K
R406 1.8M
R407 33K
C402 0.047U
Q400
2SC4617
Q401 2SC4617
5C
MOD
R419 2.2K
C415 470P
Q4 02 2SK1824
W/N
R434 5.6K
R441
10K D
R438 100K
R439 470K
R437 120K
R442 1.8K D
C430 0.033U
C428
5600P
C431 0.1U
C427 8200P
C434 1000P
C426
5.6K
C439 0.033U
C437
56P
C438 1000P
C433 0.1U
C429 5600P
R426 1K
5 6
7
IC 4 0 1 B
NJM29 02-A
9 10
8
IC 4 0 1 C NJM29 02-A
14
13 12
IC 4 0 1 D NJM29 02-A
2 3
1
4 11
IC 4 0 1 A
NJM29 02-A
R431 390K
R432 220K
R433 22K
R446 47K
R429 3300P
C423 0.1U
C425
4.7K
R427 1.8K
R428 120K
R430 33N
C422 0.1U
Q405 2SC4617
R435 100K
R447 270K
R440 0
R444 100K
R443
180K
R445 100K
Q404 2SK1824
C436
10U 6.3
RXC
AF MUTE
AF -IN
AF
RXC
C432 1U
TXC
TXC
5C
5C
RXC
D4 01 DA2 22
R449 100
C440 1000P
R450 5.6K
C441 0.01uF
L402 磁珠
C442
18nF
R453 91K
C444 0.1U
C443
18nF
R454 5.6K
R452 120K
R451 5.6K
Q406 2SC4617