Panasonic KX-FHD331, Service Manual

Page: 19 / 35

19
KX-FHD331/KX-FHD332
16
KX-FHD331/KX-FHD332
2.
4.
SCHEMA
T
IC
D
IA
GRA
M
2.4.1.
DIGITA
L
BOA
R
D
(PCB1
KX-FH
D331
only
)
+24V
+5VD
PG
DG
+5VD
+24V
+5V
A
+3.3VD
+3.3VD
+5VD
+5VD
+3.3VD
+3.3VD
+3.3VD
1 2 3 4
5 6 7 8
1
A11
2
A9
3
A8
4
A13
5
A14
6
A17
7
WE
8
VDD
9
A18
10
A16
11
A15
12
A12
13
A7
14
A6
15
A5
16
A4
17
A3
18
A2
19
A1
20
A0
21
D0
22
D1
23
D2
24
VSS
25
D3
26
D4
27
D5
28
D6
29
D7
30
CE
31
A10
32
OE
RA510
NC
1 2 3 45
6 7 8
RA509
NC
1 2 3 45
6 7 8
RA517
100
1
2
3
4 5
6
7
8
RA516
100
1
2
3
4 5
6
7
8
RA515
100
1
2
3
4 5
6
7
8
C502
Z0.1u
C542
Z0.1u
C620 Z0.1u
C504
Z0.1u
C619
Z0.1u
C628
Z0.1u
C618
K1000p
( )
C543
NC
C503
6.3V100u
( )
C850
NC
( )
J502
NC
R548 10K
R550 10K
R551
100
( )
R742
NC
R501
5.6K
R502
4.7K
R549
100
( )
R856
NC
R619
33K
Q501
+5VD
+24V
DG
PG
RESET1
( )
C505
NC
6.3V100u
C622
R702 1K
1K R703
1K R704
4.7K R684
4.7K R683
+5V
A
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9
A10 A11 A12 A13 A14 A15 A16 A17 A18
D0 D1 D2 D3 D4 D5 D6 D7
RD
CE1 CE2
WR
R
O
MCS
+24V1
+24V2
CN506
1
+24V
2
+24V
3
+24V
4
PG
5
PG
6
DG
7
+5V
CN505
1
COM(THON)
2
T
H
D
ATA
3
STB2
4
GND
5
THCLK
6
TM
7
+5V
8
GND(PD)
9
STB1
10
THLA
TCH
11
COM(THON)
K4700p
C591
K4700p
C592
0.25A F510
Z0.1u
C851
( )
C852
NC
Z0.1u
C501
DG
PG
100 R654
100
R655
100
RA518
1
2
3
4 5
6
7
8
( )
Q525
NC
( )
R900
NC
0
R901
0
F511
0
F512
DG
1
VCC-1
2
DQ1
3
DQ2
4
DQ3
5
DQ4
6
NC6
7
WE
8
RAS
9
A9R
10
A0
11
A1
12
A2
13
A3
14
VCC-14
15
VSS-15
16
A4
17
A5
18
A6
19
A7
20
A8
21
NC21
22
OE
23
CAS
24
DQ5
25
DQ6
26
DQ7
27
DQ8
28
VSS-28
L850
L522
L866
R503
100
R507
100
R505
100
R504
100
R506
100
RA514
100
1
2
3
4 5
6
7
8
1
VDD
2
GND
3
VO
U
T
4
VDET
5
CE
D[7] D[5] D[2] D[3] D[6]
A[0] A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8] A[9] A[10] A[11] A[12] RBA[0] RBA[1] RBA[2]
D[1] D[0]
A[4] A[5] A[6] A[7] RBA[0] RBA[1] RBA[4] RBA[5]
RBA[3] RBA[4]
D[4]
RBA[5]
A[1] A[3] A[6] A[8] A[9]
RBA[1] RBA[2] RBA[3]
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
A[0] A[2] A[5] A[7]
RBA[0]
A[10] A[11] A[12]
RBA[4]
A[4]
RBA[5]
RBA[3] RBA[2]
TM
THD
A
T
STB2 STB1 MDMTXEN OF-MREN HSRXEN
A[0]
A[2]
A[5]
A[7]
A[9]
A[11]
RBA[0]
RBA[2]
RBA[4]
D[0] D[1] D[2] D[3] D[4] D[5] D[6] D[7]
THON
NEWTHLA
T
NEWSTB1
NEWTHCLK
NEWSTB2
NEWTHD
A
T
A[1]
A[3]
A[4]
A[6]
A[8]
A[10]
A[12]
RBA[1]
RBA[3]
RBA[5]
TO THERMAL HEAD
TO POWER UNIT
4M DRAM
4M FLASH
f
or PR
OGRAM
IC506
IC523
IC503
IC533
STB1 STB2 STB1 STB2
THDAT THCLK THLAT
or
(a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (m) (n) (p)
(1)
(2)
(3)
(4)
(5)
(6)
(8)
(9)
(7)
(10)
1/4
KX-FHD331 : NEW DIGITAL BOARD (1/4)
(11)
KX-FHD331 / KX-FHD332
12