LG KE600 Service Manual - Page 42

Keypad Switching & Scanning - mp3

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3. TECHNICAL BRIEF 3.8. Keypad Switching & Scanning The keypad interface is a peripheral which can be used for scanning keypads up to 8 rows (outputs from Port Control Logic) and 8 columns (inputs to PCL). The number of rows and columns depend on settings of the PCL. 2V72_IO D101 PG05DBTFC D102 PG05DBTFC D103 PG05DBTFC D104 PG05DBTFC D105 PG05DBTFC D106 PRSB6.8C KP_IN0 KP_IN1 JOG_DISK_A R108 0 JOG_DISK_B R110 0 JOG_PWDN R113 0 JOG_LED_ANODE JOG_LED_CATHODE CN101 G1 1 2 3 4 5 6 7 8 9 10 G3 G2 20 19 18 17 16 15 14 13 12 11 G4 AXK7L20227G(0.9T) SOCKET R106 0 KEY-JOG MODULE 20 PIN CONNECTOR ENBY0016601 KP_IN0 KP_IN1 KP_IN2 KP_IN3 KP_IN4 KP_OUT3 KP_OUT4 END_KEY VBAT END END R102 C101 0 NA MP3 OK R103 C102 0 NA SEND SNED R112 0 C103 NA KP_OUT3 SLIDE KEYPAD ARRAY Figure 12 SUB PCB part Jog-key matrix KP_IN1 KP_IN0 R404 680 R403 680 KP_IN4 KP_IN3 KP_IN2 R407 680 R406 680 R405 680 KEYPAD CN401 4 3 2 1 NEO_LEFT_SIDEKEY_PAD NA NA CNN40E2 O_RIGHT_SIDEKEY_PAD 1 2 3 NA UCLAMP0501H_TCT INSTPAR ZD401 C402 C401 C403 UCLAMP0501H_TCT INSTPAR ZD402 KB401 1 KB404 2 KB408 3 KB402 4 KB405 5 KB409 6 KB403 7 KB406 8 KB410 9 KB_star * KB407 0 KB_shap # R422 680 KP_OUT0 R423 680 KP_OUT1 R427 680 KP_OUT2 Figure 13 MAIN PCB part numeric key matrix - 43 -

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3. TECHNICAL BRIEF
- 43 -
3.8. Keypad Switching & Scanning
The keypad interface is a peripheral which can be used for scanning keypads up to 8 rows (outputs
from Port Control Logic) and 8 columns (inputs to PCL). The number of rows and columns depend on
settings of the PCL.
SEND
MP3
ENBY0016601
KEY-JOG MODULE 20 PIN CONNECTOR
END
SLIDE KEYPAD ARRAY
SOCKET
AXK7L20227G(0.9T)
R108
0
PG05DBTFC
D101
G4
D102
PG05DBTFC
16
17
18
19
2
20
3
4
5
6
7
8
9
G1
G2
G3
1
10
11
12
13
14
15
CN101
D103
PG05DBTFC
PRSB6.8C
D106
D105
PG05DBTFC
PG05DBTFC
D104
SNED
R102
0
0
R106
C103
NA
END
NA
C102
0
R110
OK
NA
C101
R113
0
2V72_IO
R112
0
VBAT
0
R103
KP_IN3
KP_IN4
KP_OUT3
KP_OUT4
KP_IN2
JOG_PWDN
KP_IN0
KP_IN1
END_KEY
KP_IN0
JOG_LED_ANODE
KP_OUT3
KP_IN1
JOG_DISK_A
JOG_DISK_B
JOG_LED_CATHODE
Figure 12 SUB PCB part Jog-key matrix
9
0
#
*
NEO_RIGHT_SIDEKEY_PAD
5
7
KEYPAD
1
6
4
3
2
8
NEO_LEFT_SIDEKEY_PAD
680
R405
KB407
KB405
3
CN402
1
2
KB_shap
KB409
KB406
680
R407
R404
680
KB408
UCLAMP0501H_TCT
INSTPAR
ZD402
NA
C402
KB402
KB403
INSTPAR
ZD401
UCLAMP0501H_TCT
1
2
3
4
CN401
680
R423
KB401
R427
680
680
R403
C401
NA
KB_star
KB404
KB410
R406
680
C403
NA
R422
680
KP_OUT2
KP_OUT0
KP_OUT1
KP_IN0
KP_IN4
KP_IN1
KP_IN2
KP_IN3
Figure 13 MAIN PCB part numeric key matrix