13.3. OPERATION BOARD (PCB3)
SW30
HELP
SW24
1
SW25
4
SW26
7
SW27
*
SW11
0
SW10
8
SW7
RECEIVE MODE
SW8
2
SW21
(
)
SW13
MONITOR
SW6
(
)
SW19
[3]
#
SW18
9
SW17
6
SW16
3
SW31
FAX/START
SW20
MUTE
SW12
REDIAL/PAUSE
SW5
NO USE
NC
SW14
(
)
SW22
(
)
PS1
1
2
3
4
R4
10K
+5V
C1
Z0.1u
C2
100u
SW4
NC
NO USE
SW3
NO USE
NC
R19
10K
R17
10K
R15
10K
R13
10K
R14
470
R16
470
+5V
PS2
1
2
3
4
SW2
NO USE
NC
IC1
1
4
2
6
3
COM
4
7
5
5
6
TNH
7
VEE
8
VSS
9
C
10
B
11
A
12
3
13
0
14
1
15
2
16
VDD
+5V
10K
R10
+5V
R7
10K
Q1
Q2
+5V
R12 56K
R11
270
D1
+5V
+5V
C6
Z0.22u
C7
NC
C8
NC
SW28
FLASH
SW29
MENU
C9
NC
C5
NC
Q4
NC
R6
NC
C4
NC
R9
NC
R8
NC
C3
NC
R29
NC
R27
NC
+5V
CN2
1
MICIN
2
AG
3
NC
4
DG
5
KRXD
6
KTXD
7
KLATCH
8
KSCLK
R5
10K
CN3
1
VSS
2
VDD
3
V0
4
RS
5
R/W
6
E
7
DB0
8
DB1
9
DB2
10 DB3
+5V
D2
LED1
R31
NC
Q5
NC
R32
NC
CN1
[0]
1
KSTART
2
KIN3
3
KIN2
4
KIN1
5
KIN0
6
E
7
RS
8
OPESEL
9
+5V
R33
4.7
SW9
5
SW23
STOP
R28
10K
R30
750
SW1
NO USE
NC
SW15
COPY
R2 10K
Q3
R3
10K
R1
NC
J102
NC
J101
NC
R20
470
R18
470
R34
NC
Q6NC
R35
NC
PAPER
SENSOR1
TO:DIGITAL BOARD
PAPER
SENSOR2
LCD MODULE
TO MIC
RED
BLACK
NOT USE
NOT USE
OPERATION BOARD SCHEMATIC DIAGRAM
KX-FT72BR-G
5V
0V
0V/3.3V/5V
5V
0V
5V
0V
5V
0V
KX-
FT72B
R
-G
161
Summary of Contents for KX-FT72BR-G
Page 3: ...1 1 LCD MESSAGE 1 INTRODUCTION 3 KX FT72BR G ...
Page 8: ...1 11 TEST CHART 1 11 1 ITU T NO 1 TEST CHART 8 KX FT72BR G ...
Page 9: ...1 11 2 CCITT NO 2 TEST CHART 9 KX FT72BR G ...
Page 10: ...1 12 LOCATION OF CONTROLS 1 12 1 OVERVIEW 10 KX FT72BR G ...
Page 29: ...2 3 4 3 MULTIPLE FEED CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 29 KX FT72BR G ...
Page 30: ...2 3 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 30 KX FT72BR G ...
Page 34: ...CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 34 KX FT72BR G ...
Page 39: ...2 3 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 39 KX FT72BR G ...
Page 45: ...45 KX FT72BR G ...
Page 46: ...CROSS REFERENCE TEST FUNCTIONS P 82 46 KX FT72BR G ...
Page 47: ...CROSS REFERENCE TEST FUNCTIONS P 82 47 KX FT72BR G ...
Page 48: ...48 KX FT72BR G ...
Page 49: ...CROSS REFERENCE TEST FUNCTIONS P 82 CROSS REFERENCE TEST FUNCTIONS P 82 49 KX FT72BR G ...
Page 50: ...50 KX FT72BR G ...
Page 51: ...51 KX FT72BR G ...
Page 52: ...CROSS REFERENCE TEST FUNCTIONS P 82 52 KX FT72BR G ...
Page 58: ...58 KX FT72BR G ...
Page 59: ...Normal Wave Patterns 59 KX FT72BR G ...
Page 61: ...CROSS REFERENCE NG EXAMPLE P 63 CHECK THE STATUS OF THE DIGITAL BOARD P 64 61 KX FT72BR G ...
Page 62: ...CROSS REFERENCE CHECK THE STATUS OF THE DIGITAL BOARD P 64 62 KX FT72BR G ...
Page 63: ...2 3 6 2 NG EXAMPLE 63 KX FT72BR G ...
Page 66: ...2 3 7 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 66 KX FT72BR G ...
Page 68: ...2 Troubleshooting Flow Chart 68 KX FT72BR G ...
Page 69: ...69 KX FT72BR G ...
Page 73: ...2 3 11 READ SECTION Refer to SCANNING BLOCK P 112 73 KX FT72BR G ...
Page 79: ...2 4 5 SERVICE MODE SETTINGS Example of a printed out list 79 KX FT72BR G ...
Page 85: ...3 2 HOW TO REMOVE THE OPERATION BLOCK 85 KX FT72BR G ...
Page 86: ...3 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 86 KX FT72BR G ...
Page 87: ...3 4 HOW TO REMOVE THE BOTTOM FRAME AND ANALOG BOARD 87 KX FT72BR G ...
Page 88: ...3 5 HOW TO REMOVE THE DIGITAL POWER SUPPLY BOARD AND AC INLET 88 KX FT72BR G ...
Page 89: ...3 6 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER 89 KX FT72BR G ...
Page 90: ...3 7 HOW TO REMOVE THE MOTOR AND GEARS OF MOTOR BLOCK 90 KX FT72BR G ...
Page 91: ...3 8 HOW TO REMOVE THE IMAGE SENSOR CIS 91 KX FT72BR G ...
Page 92: ...3 9 HOW TO REMOVE THE DOCUMENT FEED ROLLER 92 KX FT72BR G ...
Page 93: ...3 10 HOW TO REMOVE THE THERMAL HEAD 93 KX FT72BR G ...
Page 94: ...3 11 INSTALLATION POSITION OF THE LEAD WIRES 94 KX FT72BR G ...
Page 96: ...4 3 FLAT PACKAGE IC INSTALLATION PROCEDURE 4 4 BRIDGE MODIFICATION PROCEDURE 96 KX FT72BR G ...
Page 97: ...5 CIRCUIT OPERATIONS 5 1 CONNECTION DIAGRAM 97 KX FT72BR G ...
Page 99: ...5 2 1 General Block Diagram 99 KX FT72BR G ...
Page 109: ...5 4 2 BLOCK DIAGRAM 109 KX FT72BR G ...
Page 111: ...111 KX FT72BR G ...
Page 117: ...5 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 72 117 KX FT72BR G ...
Page 132: ...5 10 1 CIRCUIT DIAGRAM 132 KX FT72BR G ...
Page 135: ...5 12 POWER SUPPLY BOARD SECTION 135 KX FT72BR G ...
Page 137: ...6 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 137 KX FT72BR G ...
Page 138: ...7 FIXTURES AND TOOLS 138 KX FT72BR G ...
Page 140: ...8 2 UPPER CABINET SECTION 140 KX FT72BR G ...
Page 141: ...8 3 LOWER CABINET P C B SECTION CROSS REFFERENCE MOTOR SECTION P 142 141 KX FT72BR G ...
Page 142: ...8 4 MOTOR SECTION 142 KX FT72BR G ...
Page 143: ...8 5 ACTUAL SIZE OF SCREWS 143 KX FT72BR G ...
Page 144: ...9 ACCESSORIES AND PACKING MATERIALS 144 KX FT72BR G ...
Page 163: ...163 KX FT72BR G Y M KXFT72BRG ...