CONTROL BOARD
TABLE OF CONTENTS
IC Interbnal Block Diagram ............................................. 5-1
Circuit Diagram ................................................................ 5-2
PCB Layout Top & Bottom View ...................................... 5-3
Electrical Parts List .......................................................... 5-4
5-1
5-1
HT16511 INTERNAL BLOCK DIAGRAM
HT48R05A INTERNAL BLOCK DIAGRAM
Voltages:
PA0-PA7
TMR/PC1
WDTS
WDT
PORT C
PC0-PC1
PB0-PB2
PC1
INTC
M
U
X
MP
OSC2
OSC2
RES
VDD
VSS
ACC
Timing
Generator
Program
ROM
Instruction
Registor
Instruction
Decoder
Program
Counter
STACK0
STACK1
INT/PC0
Interrupt
Circuit
DATA
Memory
MUX
ALU
Shifter
Status
TMR
TMRC
M
U
X
Prescaiser
WDT Prescaiser
PCC
PC
PB
PAC
PA
PBC
BZ/BZ
PORT B
PORT A
M
U
X
RC OSC
fsus/4
fsys
DI
DO
CLK
CS
OSC
K0-K3
SW0-SW3
Latch
4-Bit
Serial I/F
Command Decoder
Display RAM
20-Bit x 16 Words
20-Bit
Output Latch
20
12
Segment
OSC
Timing Generator
Key Scan
Key Data RAM
(4 x 12)
5-Bit Latch
16 Bit
Shift Register
Diming Cirduit
Grid
Driver
12
8
8
8
8
8
8
16
Multiplexed
Driver
Driver
S1/K1–
S12/K12
S13/G16–
S20/G6
G1–G8
LED0–LED4
VDD VSS VEE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
0
0
0
3.8
3.8
0
3.8
3.7
0
0
0
0
0
PIN NO
Voltage
19.7 -22.2 -22.0 -11.2 -19.9 -17.8
PIN NO
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Voltage -21.8 -15.6 -13.4 - 20 -13.4 -20
-22.4 -18 -20.3 -13.2 -15.8 -11.4 -4.6 -22.6 -20.4 -20.4 -20.4 -20.4 -20.4 -20.4
PIN NO
41
42
43
44
45
46
47
48
49
50
51
52
Voltage -20.4 -20.4 -20.5 -20.4 4.6
4.6
4.6
4.6
0
4.6
0
0.9
IC251 (HT16511)
PIN NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Voltage
5.1 5.1 5.1 0 5.1 0 5.1 0 0 4.9 4.9 5.2 0 0 0 0 0 0
IC252 (HT48R05A)
PIN NO
b
c
e
Voltage
4.4
4.1
4.0
Q201 (2SA812)
PIN NO
b
c
e
Voltage
4.9
0
4.8
Q202 (2SA1623)
Содержание LX600
Страница 7: ...2 1 2 1 REPAIR INSTRUCTION ...
Страница 8: ...2 2 2 2 REPAIR INSTRUCTION ...
Страница 10: ...3 2 SERVICE POSITIONS Service position A Service position B 3 2 ...
Страница 11: ...4 1 BLOCK DIAGRAM 4 1 ...
Страница 12: ...4 2 WIRING DIAGRAM 4 2 ...
Страница 18: ...CIRCUIT DIAGRAM POWER BOARD 01 6 2 6 2 ...
Страница 19: ...CIRCUIT DIAGRAM POWER BOARD 69 6 3 6 3 ...
Страница 20: ...PCB LAYOUT POWER BOARD 6 4 6 4 ...
Страница 41: ...9 1 9 1 EXPLODED DRAWING use for 69 use for 01 ...
