Digital Board (Pcb1) - Panasonic KX-FHD333BR Service Manual

16.2. DIGITAL BOARD (PCB1)

1/4
+5VD +5VA
CN506 TO POWER UNIT
7 7
6 6
5 5
4 4
DG
3 3
+24V
2 2
1 1
+24V
IC506
1 8
2 7
3 6
4 5
Q501
TO
THERMAL HEAD
CN505
COM(THON) 11
PG
R503 100
THLAT 10
R504 180
STB1 9
GND(PG) 8
PG
+5V 7
TM 6
L522
R505 100
THCLK 5
NC
GND 4
C506 R506 180
STB2 3
R507 100
THDAT 2
COM(THON) 1
+24V
+5VD
R520 1.5K 1/2W
Q502
(1)
KX-FHD333BR : DIGITAL BOARD (1/4)
+5VD +5VD
R679
C
5.6K
E
+5VD
THDAT
+5VD
THCLK
THLAT
STB1
STB2
or
STB1
STB2
R699 0
NEWTHLAT
R700 0
NEWTHCLK
R701 0
NEWTHDAT
RM0
RM1
RM2
RM3
RXE
Q503
L501 100
RXE
(2)
(3)
IC523
A
A[0] D[0]
20 21
PS501 A0 D0
K A[1] D[1]
19 22
A1 D1
A[2] D[2]
18 23
A2 D2
A[3] D[3]
17 25
A3 D3
SENLED1
A[4] D[4]
16 26
A4 D4
Q517
A[5] D[5]
15 27
A5 D5
A[6] D[6]
14 28
A6 D6
PTOP
A[7] D[7]
13 29
A7 D7
THON A[8]
3 7
A8 WE
A[9]
2 30
A9 CE
A[10]
31 32
+3.3VD
A10 OE
A[11]
1 8
A11 VDD
A[12]
12 24
A12 VSS
RBA[0]
4 9
A13 A18
RBA[1]
5 6
A14 A17
RBA[2]
11 10
A15 A16
RBA[3]
RBA[4] NO. 16
RBA[5]
NEWSTB1
NEWSTB2
+5VD
+3.3VD +3.3VD
IC507
1 5
VOUT CE
2
VDD
3 4
GND VDET
(4) (5) (6) (7) (8)(9)
+5VD
IC503
A[4]
10 2
DA0 D0
A[5]
11 3
DA1 D1
A[6]
12 4
DA2 D2
A[7]
13 5
DA3 D3
RBA[0]
16 24
DA4 D4
RBA[1]
17 25
DA5 D5
RBA[2] 18 26
DA6 D6
RBA[3]
19 27
DA7 D7
RBA[4]
20 +5VD
DA8
RBA[5]
9
DA9
6
+3.3VD
NC6
21 14
NC21 VDD-14
1
VDD-1
7
WE
22
OE
8 15
RAS GND-15
23 28
CAS GND-28
C628 Z0.1u
C543 Z0.1u
+3.3VD
CISMEN
THDAT
THDAT
49 32
STB2
50 STB2 KOVER 31
STB1
51 STB1 DRPSEL 30
MDMTXEN
52 PC7 DRAMCS 29
OF-MREN
53 PC6 GND 28
HSRXEN
54 PC5 PA7/DRB7 27
55 MCHG PA6/DRB6 26
56 RESET PA5/DRB5 25
IC520
R742 270 57 GND PA4/DRB4 24
58 FLASHCS PA3/DRB3 23
CLE
59 PB4/A12 PA2/DRB2 22
60 PB3/A11 PA1/DRB1 21
61 PB2/A10 PA0/DRB0 20
62 PB1/A9 GND 19
63 PB0/A8 D3 18
64 A3 D2 17
(16)
(15)
(10) (11) (13) (14) (17)
(12)
(a)
R693
(b)
CLE
(c)
(d)
Q522
(e)
(f)
(g)
(h)
(i)
(j)
(k)
KOVER
(m)
DRB[7]
DRB[6]
DRB[5]
DRB[4]
DRB[3]
DRB[2]
+3.3VD
DRB[1]
DRB[0]
(n)
(p)
(q)
(r)
(19)
(18) (20)