Rys.1. Schemat ideowy aparatu telefonicznego C-878 firmy CYFRAL.
D5
R15
2×1N4148
1N4148 D24
3M9 R78
D6 D7
VZ
1k2
1N4148
TIP
R16 ZD3 D11
SW2/A R113
Q23
4V7 1N4148
D1-D4
8.2
9014
470k R17
4×1N4004
R70 10 D30
Q4 2k
1N4001
ZNR1
HMPSA92
270V
VZ
Q6
R112
ZD2 C53 R29
R10 R18
C111 22µ
C1815 C8 100n ZD8 ZD6
R21 10k C18
22n
100k 82k
RING 2V7
16V 8V2
1000µ
220k
R6 470k D12 BT1
Q2 R30
47
A MPSA92 C48
LED1 C5 1M
22n SW2/B
1N4148 4.5V
R22
R7 R20
470k
R11 SW10
100 2k2 µ1
HOLD 100 HOLD
C44 15n
R23
3 2
U1 47k
C3 Q5
UM66T R82
1 10µ R12 R13 R14
HMPSA42
6k8
C2 47k 10k 6k8 R37
1 28 27 26
VZ C49
100n 2M R38
R8 R39
24k
15k C47 20k
D8 25
2 470p
Q12
R91 470p
Q21
STS C4
1N4148
C1815
C50 100k C1815
C4 Q7
C1
Q3 3 24
10n
R84
1µ 2SA1015GR
1µ R1 C3
R9 MPSA42
VZ
R40 R77
82k 23 R83
4 12k
R1
R25 C2
R2 R76 750 91k 4.7
6k8
11k Q20 0
5 22
Q19
ZD9 C1815 Q13
R3 C1
C1815
5V6 BC337-25
D16-D19
C12
6 21 R41
4×1N4004 R26 R4 PO R81
33n
R89 R92 18
LOW R51
VCC
4k7 10k
R5 100 220k
HIGH 7 20 100k
4k7 R5 HFO
R4 R48
R44
8 19 330
C13
OFF D25 D10
HKS XMUTE R46
270 22
R111 1N4148 1N4148 220µ Q16
10k
SW1 R31 3k6
ZD7 27V 9 18 2SA1015GR
47k
C11
SW11 M/B TONE
D22
D9
22n
H.F.
R80 R42
1N4148
C37 22µ 1N4148 10 17
C16
HFI HDI 3k0
20k
U4
Q15
1 47µ
KA2411 C7
MODE
11 16 D23 C1815
R96 9k1 SP2
HDO
2 8 100n
1N4148
R36
DR-904
BUZ1 R49
C46
3 7 R3 33k
MIC2
BUZZER 560
10n
75k 12 13 14 15
4 6 34C5R
D20
C38 1N4148
R2 R47
C39 SW3 X1
µ47 P R35 Q11
150k 1M
5
4n7 3.58MHz
C6
220k C1815
Q17
220µ C40
C51 C52
T C1815
2µ2
T/P 33p 33p
R59 C14
R43
100k 22n
10k
VZ
C19 R93 R54 C22
Q10 2k7
100n 3k3 68n
R33
C1815
220k
C23
Q8
R56 R34
R27 100n
C1815
R52
33k 100k
220k
R55
C43 47k
SW12
1µ R53C20 C21 2k2
MUTE
100n 68n
2k2
R28
R58 9 16 18 5 4 3 13 10 7 27
C41
100k
100k
2µ2 C24
R100
68n
C45
4k7
C25 1µ
47µ 17 15
A AGC SKO
Wersja1 21 28
C26
VB RRX
24 U3 MC34018 19
VLC SKI
47n
23 26 C36
XDC RXO
D26
47µ
1N4004
MIC1
R67
R85
C1(22) C3(24) C5(26) C7(28)
WM-034CY 4k3 C35
1k8
C2(23) C4(25) C6(27) C8(1) SP1
R57
100n
C27 1 2 22 14 11 25 20 6 8 12
1k5
R60
R19
R1(3) 4µ7
Q18 100k
1M5
FL M1 M6 M11 M16 C33
R86 C34
C1815
4µ7
Do SW11 R63 10n VR1
68k
R2(4) C28 C29
1 2 3 M2 M7 M12 M17
47µ 4µ7 VR50KB
R3(5) 100k
6
4 5 M3 M8 M13 M18 R61 R62
R71 R68
R102 VCC
30k 91k
6k8 30k
470 R4(6)
C30
9
7 8 ST M4 M9 M14 M19
R64
47µ C31
1k5
R5(7) C32
1µ
0 # RD M5 M10 M15 M20
*
1µ
LED2 R65 R66
ZD10 C101
H.F. 1M 1M
16V/1W 1µ
C5
C8
C7
C6
SERWIS
ELEKTRONIKI
U2
Baza Porad Serwisowych
HM9122A
OSCO
OSCI
VDD
VSS
MCO
TLO
RXI
CP2
RLI
RLO
MCI
XDI
VCC
TXI
ACF
CS
TLI
TXO
VZ
GND
SKG
RTX
CP1
RR