Panasonic KX-FC379CX Service Manual page 241

KX-FC379CX
PTOP
REED
(1)
FILMEND
CRESET
(2)
S_ENB
BELL_TX
(3)
(4) TELRXEN INTERCOM
XHSTWR
(5)
INTERCOM
+5VA1
(6)
MDMTXEN
(7) HSTXMUTE
(8) TONE2EN
TONE1EN
(9)
C682
(10)
K0.1u
Q526
(11)
(12)
(13)
(14)
R703
10K
(15)
(16)
MDMRST
(17)
(18)
(19)
(20)
(21)
(22)
(23)
(24)
R553
LOW : MDMRST
1M
Hi-Z : MDMRST cancel
X502
24.000MHz
(25)
(26)
(27)
(28)
(29)
+3.3VD
R682
R683
CISON
(30)
10K 100K
Q520
VIDEO
Default: OFF (0V)
TO CIS
+5VD +24V1
Q529
TO SENSOR
BOARD
R710
CN513
10K
R524
1 PTOP
100
+5VA
R535
2 REED
4.7K
+5VD
3 GND
AG
SW501
R530
4 1
3 2
100
FILM/COVER
SW
AG
+5VA
+3.3VA2
IC520
C675
R702
AG AG
1 14
VDD
J56p C679
680K
AG
2 13
R696
K2200p
3 12
470K
C676
R699
4 11
10K K0.056u
5 10
6 9
7 VSS 8
AG
AG
AG
R704
68K
AG
+3.3VD
+5VD
R742
NC
+5VD
L520
X503
R563
32.256MHz XCLK
100
FTG
AG_M
Q507
+3.3VD
C715
Z0.1u
PG
+24V2
R750
100
CN503
+12V +24VA C723
+5VA
K0.1u
IC522
1 14
VDD
2 13
3 12
C685
4 11
+3.3VD +3.3VA2
+2.2V K0.1u
5 10
+2.2V
6 9
7 VSS 8
+5VA
AG
AG
R693 C674 R748
0
3.9K K0.1u
AG
C673
AG
IC521 +24VA
J100p
R692 L538
1 8
1OUT VCC+
0
330K
2 1IN- 7
2OUT
C671 J47p
3 1IN+ 6
2IN-
R690
R691 82K
4 VCC- 5
2IN+
330K
C672
NC
AG
+12V
C670
R689
K0.1u
180K
C669 R687 C668
R688
C712
K0.056u 27K 56K NC
R745
K0.1u
R749
0 0
Q525
C574 NC
( )
C578 Z0.1u
NC
R782
C704 Z0.1u
R781 0
103
104 GPO4
RESERVED
105 GPO3
106 DGND4
107 CTS
108 IRQ1
109 GPO2
110 GPO1
111 GPO0
112 VDD5
113 VGG
114 DGND5
IC505
115 RESET
116 XTALI
117 XTALO
118 RESERVED
119 XCLK
120 GPO1
121 IRQ2
122 SR3IN
123 RESERVED
RESERVED
124
DGND6
125
126 DVAA
127 AGND5
128
RESERVED
C559
Z0.1u
KX-FC379CX : DIGITAL BOARD SCHEMATIC DIAGRAM
240
FAX TX
R758
FAX RX
10K
+2.2V
AG
AG
C684
DCN
K0.1u
P_SHORT
+24V1
CPC
+5VA
ALC
+5VA
AG
L540
BELL
R780
ALC_OUT
LINERLY
NC
ALC
+3.3VD SPMUTE
Q532
CH_CTL
NC
CHARGE
AG
CH_CTL
+5VD
R746 CH_CTL
NC CHARGE
Q531
CSI
NC
CSO
CCLK
AG
R685
R684 C667
CBUSY1
6.8K Q524
15K K0.1u
CBUSY2
CRESET
S_ENB
AG
BELL_TX
BELL
AG_M
NC 64
63 AG_M
MICM_P 62
MICP_P 61
LINEIN_P 60
NC 59
MICBIAS_P
AGND3 58
IARESET_P 57
FSYNC_P 56
SIN_P 55
SOUT_P 54
RESERVED 53
CTRLSIN_P 52
MCLK_P 51
ICLK_S/NC 50
RESERVED/NC 49
AVDD_S/NC 48
SPKRM_S/NC 47
SPKRP_S/NC 46
AGND2 45
NC 44
AG_M
LINEOUT_S/NC 43
VAA_S/NC 42
VC_S/NC 41
VREF_S/NC 40
NC 39
AG_M
AG_M
100
L517
100
L516
C695 R717 C697
NC 1K K0.1u
AG_M
CN501
1 DCN
2 P_SHORT
3 CPC
4 ALC
5 +5VA
6 AG
7 C_IN
8 LINERX
0
9 LINETX
10 SPOUT
11 +24V
12 BELL
13 LINERLY
14 SPMUTE
15 CH_CTL
16 CHARGE
CN514
1 +5VD
2 +5VD
3 AG
AG
4 DG
CN510
1 CH_CTL
R762 NC
2 CHARGE
R763
3 CSI
0
4 CSO
R765
0
5 CCLK
R764 NC
6 CBUSY1
7 CBUSY2
8 CRESET
9 S_ENB
L543 0
10 HSRX
L539 0
11 HSTX
12 C_IN
R783
13 BELL_TX
0
AG
+5VA
AG_M
CN509
1 MIC+
2 MIC-
TO MIC
3 MIC-
AG