16.
3. O
P
E
R
A
T
IO
N
BO
A
R
D
(P
CB3)
3.3V
0V
LCD CONTRAST
0V
LED: ON
5V
LED: OFF
5V
0V
5V
0V
+5V
C310
Z0.1u
R303
18K
R305
2.2K
C303
6.3V 100u
C314
Z0.1u
IC301
30
RESET
31
SCLK
32
RXD
33
TXD
34
LA
TCH
35
ST
AR
T
42
KIN0
3
KIN1
7
KIN2
8
KIN3
11
KIN4
12
KIN5
13
KIN6
14
KIN7
43
KSL0
41
LED5
38
LED4
37
LED3
36
LED2
29
D7
28
D6
27
D5
26
D4
25
E
24
R/W
23
RS
22
LED1
19
XL13
40
VDD
17
VDD
44
KSL1
2
LED6
1
KSL2
5
XL8
10
KSL3
6
XL9
4
KSL4
XL12
15
9
XL10
16
XL11
18
GND
20
XL14
39
GND
21
XL15
R315
100
C316
K0.01u
R314
56K
SW351
31
42
R317
100
C317
K0.01u
R316
4.7K
+5V
C304
Z0.1u
C305
J100P
C302
Z0.1u
C308
J330P
C309
J330P
( )
NC
R304
R318
4.7
+5V
+5V
+5V
+5V
CN302
1
GND
2
+5VLCD
3V
O
4R
S
5
R/W
6E
7D
0
8D
1
9D
2
10
D3
SW301
COPY
SW302
F
AX/ST
AR
T/SET
SW303
SEARCH
SW305
REDIAL/P
A
USE
SW306
3
SW307
#
SW308
6
SW309
9
SW310
FLASH
SW311
2
SW312
0
SW313
5
SW314
8
SW315
MUTE
SW316
1
SW317
SW318
4
SW319
7
SW320
MAIL3
NC
SW322
MAIL2
NC
SW327
GREETING_
CHECK
SW331
MENU
SW332
(+)
SW335
SW336
ST
OP
R306
1.2K
C311
Z0.1u
SW329
GREETING_REC
SW324
MAIL1
R312
270
LED301
A
U
T
O
ANSWER
RED
+5V
SW323
HOLD
NC
SW333
SW337
HELP
820
R307
SW321
CONF
NC
SW326
ERASE
SW328
MEMO
270
R302
IC351-2
1
2
3
4
8
330
R351
C352
K0.01u
+5V
3.3K
R352
C351
6.3V 100u
L351
L352
10K
R354
10K
R355
3.3K
R353
+5V
A
100K
R358
68K
R359
C357
Z0.1u
27K
R357
0
R361
C358
Z0.1u
PS301
1
2
4
3
R313
330
SW304
LOCA
T
OR/
INTERCOM
SW330
SP-PHONE
SW325
A
U
T
O
ANSWER
SW334
(-)
( )
J351
NC
C355
D10P
( )
D351
NC
( )
C319
NC
C359
NC
C360
NC
68
R321
180
R322
180
R323
180
R324
+5V
A
C322
Z0.1u
2.2K
R360
( )
R320
NC
+5V
+5V
CN301
1
GND
2
+5V
3
KST
AR
T
4
K
LA
TCH
5
KRXD
6
KTXD
7
KSCLK
8
RESET
9
MICIN
10
AG
( )
LED302
NC
LED303A
LED303C
C356
K1000P
27K
R356
C354
K0.1u
C353
K0.1u
R325
330
J391
0
R326
10K
IC351-1
5
6
7
DOCUMENT
SET SENSOR
DOCUMENT
T
OP SW
T
O
DIGIT
AL
T
O
MIC
MIC (+)
MIC (-)
T
O
LCD
T
O
COB
LED303
CHARGE
RED
KX-FC379CX :
OPERA
TION BO
ARD SCHEMATIC DIAGRAM
KX-FC379CX
243
Summary of Contents for KX-FC379CX
Page 38: ...6 2 3 How to Remove the Operation Board and LCD 37 KX FC379CX ...
Page 39: ...6 2 4 How to Remove the Image Sensor CIS 38 KX FC379CX ...
Page 40: ...6 2 5 How to Remove the Thermal Head 39 KX FC379CX ...
Page 41: ...6 2 6 How to Remove the Back Cover 6 2 7 How to Remove the Platen Roller 40 KX FC379CX ...
Page 42: ...6 2 8 How to Remove the Pickup Roller and Antenna 41 KX FC379CX ...
Page 44: ...6 2 11 How to Remove the Digital Analog and Sensor Boards 43 KX FC379CX ...
Page 45: ...6 2 12 How to Remove the Power Supply Board and AC cord 44 KX FC379CX ...
Page 46: ...6 2 13 How to Remove the Gear Block and Separation Roller 45 KX FC379CX ...
Page 47: ...6 2 14 How to Remove the Gears Motors and Arms of the Gear Block 46 KX FC379CX ...
Page 48: ...6 2 15 Installation Position of the Lead Wires 47 KX FC379CX ...
Page 49: ...6 2 16 How to Remove the Antenna of Handset 48 KX FC379CX ...
Page 50: ...6 2 17 How to Remove the Handset Board and LCD 49 KX FC379CX ...
Page 51: ...6 2 17 1 Assembly the LCD to Handset Board 50 KX FC379CX ...
Page 63: ...7 4 4 1 Test Burst Mode and Test TX CW Mode 62 KX FC379CX ...
Page 64: ...7 4 4 2 RX CW Test Mode 63 KX FC379CX ...
Page 65: ...7 4 4 3 Test Link Mode 64 KX FC379CX ...
Page 66: ...7 4 5 Test Mode Flow Chart for Handset 7 4 5 1 TX Burst Mode 65 KX FC379CX ...
Page 67: ...7 4 5 2 RX CW TEST Mode 66 KX FC379CX ...
Page 79: ...7 6 2 Service Mode Settings Note The above values are the default values 78 KX FC379CX ...
Page 94: ...93 KX FC379CX ...
Page 108: ...107 KX FC379CX ...
Page 109: ...CROSS REFERENCE TEST FUNCTIONS P 58 108 KX FC379CX ...
Page 110: ...CROSS REFERENCE TEST FUNCTIONS P 58 109 KX FC379CX ...
Page 111: ...CROSS REFERENCE TEST FUNCTIONS P 58 110 KX FC379CX ...
Page 112: ...CROSS REFERENCE TEST FUNCTIONS P 58 111 KX FC379CX ...
Page 113: ...112 KX FC379CX ...
Page 114: ...113 KX FC379CX ...
Page 115: ...CROSS REFERENCE TEST FUNCTIONS P 58 114 KX FC379CX ...
Page 119: ...118 KX FC379CX ...
Page 123: ...I O and Pin No Diagram 122 KX FC379CX ...
Page 125: ...Other NG example while the power is ON and the LCD displays the following 124 KX FC379CX ...
Page 126: ...7 7 6 3 NG Example 125 KX FC379CX ...
Page 128: ...127 KX FC379CX ...
Page 131: ...Note Check to the SP Phone Rx Tx signal routes Refer to Check Sheet P 126 130 KX FC379CX ...
Page 133: ...7 7 9 2 Troubleshooting Flow Chart 132 KX FC379CX ...
Page 139: ...7 7 13 Thermal Head Section Refer to Thermal Head P 161 138 KX FC379CX ...
Page 146: ...7 7 16 1 5 RF DSP interface signal wave form 145 KX FC379CX ...
Page 148: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 147 KX FC379CX ...
Page 152: ...8 3 2 Memory Map 151 KX FC379CX ...
Page 161: ...8 4 2 Block Diagram 160 KX FC379CX ...
Page 163: ...162 KX FC379CX ...
Page 201: ...8 18 EXPLANATION OF RF UNIT TERMINALS RF Unit 8 18 1 IC901 200 KX FC379CX ...
Page 202: ...9 REFERENCE MATERIAL DATA 9 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 201 KX FC379CX ...
Page 205: ...9 3 TEST CHART 9 3 1 ITU T No 1 Test Chart 204 KX FC379CX ...
Page 206: ...9 3 2 ITU T No 2 Test Chart 205 KX FC379CX ...
Page 207: ...10 FIXTURES AND TOOLS 206 KX FC379CX ...
Page 208: ...11 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 11 1 GENERAL SECTION 207 KX FC379CX ...
Page 210: ...11 3 UPPER CABINET SECTION 209 KX FC379CX ...
Page 211: ...11 4 BACK COVER SECTION 210 KX FC379CX ...
Page 212: ...211 KX FC379CX ...
Page 213: ...212 KX FC379CX ...
Page 214: ...11 5 LOWER CABINET P C BOARD SECTION CROSS REFERENCE GEAR BLOCK SECTION P 214 213 KX FC379CX ...
Page 215: ...11 6 GEAR BLOCK SECTION 214 KX FC379CX ...
Page 216: ...11 7 HANDSET SECTION 215 KX FC379CX ...
Page 217: ...11 8 SCREWS 216 KX FC379CX ...
Page 218: ...12 ACCESSORIES AND PACKING MATERIALS 217 KX FC379CX ...