Read Sharp LC-19A1E (serv.man5) Service Manual online
LC-19A1E-BK/WH
5 – 7
W2
VRPC
—
Terminal for reference voltage of C-ch A/D converter (Top)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
L2
VRNA
—
Terminal for reference voltage of A-ch A/D converter (Bottom)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
P2
VRNB
—
Terminal for reference voltage of B-ch A/D converter (Bottom)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
V3
VRNC
—
Terminal for reference voltage of C-ch A/D converter (Bottom)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
M3
VCMA
—
Terminal for reference voltage of A-ch A/D converter (Centre)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
R3
VCMB
—
Terminal for reference voltage of B-ch A/D converter (Centre)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
V2
VCMC
—
Terminal for reference voltage of C-ch A/D converter (Centre)
(it connects to AVSS through 0.1uF.)
(it connects to AVSS through 0.1uF.)
C-GND
N3
REXTA
—
External resistance terminal for A-ch A/D converter
(it connects to AVSS through 24k
(it connects to AVSS through 24k
Ω.)
R-GND
T2
REXTB
—
External resistance terminal for B-ch A/D converter
(it connects to AVSS through 24k
(it connects to AVSS through 24k
Ω.)
R-GND
W3
REXTC
—
External resistance terminal for C-ch A/D converter
(it connects to AVSS through 24k
(it connects to AVSS through 24k
Ω.)
R-GND
J3
TEST_MONI
O
Monitor signal for Analogue test (A-ch)
open
D1
ADIN0
I
A/D converter ch0 around microcomputer
OPC-IN
E3
ADIN1
I
A/D converter ch1 around microcomputer
KEY_1A
E2
ADIN2
I
A/D converter ch2 around microcomputer
KEY_2A
E1
ADIN3
I
A/D converter ch3 around microcomputer
D_L1
F3
ADIN4
I
A/D converter ch4 around microcomputer
D_L2
F2
ADIN5
I
A/D converter ch5 around microcomputer
AFT/AGC
F1
ADIN6
I
A/D converter ch6 around microcomputer
open
G3
ADIN7
I
A/D converter ch7 around microcomputer
LAMP_ERR
A19
XI
I
The oscillation buffer input in an audio multiplex decoder
X-IN
B19
XO
O
The oscillation buffer output in an audio multiplex decoder
X-OUT
E23
FRESET
I
Reset input in an audio multiplex decoder
R-GND
C20
TEST
I
Test terminal in an audio multiplex decoder
GND
A20
VREF1
—
Reference voltage 1 of an A/D converter in an audio multiplex decoder
C-GND
B20
VREF2
—
Reference voltage 2 of an A/D converter in an audio multiplex decoder
C-GND
A21
SIF
I
SIF input in an audio multiplex decoder
SIF
B23
LOUT
O
L-ch Analogue output in an audio multiplex decoder
DVPM2_L
D23
ROUT
O
R-ch Analogue output in an audio multiplex decoder
DVPM2_R
C22
SCL
I
I2C-bus interface transmission clock in an audio multiplex decoder
SCL2
D22
SDA
I/O
I2C-bus interface transmit/receive data in an audio multiplex decoder
SDA2
C23
VCOM
—
Reference voltage of an A/D converter in an audio multiplex decoder
C-GND
D21
LRCK
I
LR clock in an audio multiplex decoder
open
E20
DACCLK
I
D/A converter clock in an audio multiplex decoder
open
E21
BCK
I
Bit clock in an audio multiplex decoder
open
E22
SDI
I
Digital input for built-in D/A converter in an audio multiplex decoder
open
F22
SDO
O
Digital output for built-out D/A converter in an audio multiplex decoder
open
F23
STATUS
I
Status signal in an audio multiplex decoder
R-GND
D19
WW_EU
I
The change of specification WW/EU (Fixed “L”) in an audio multiplex decoder
GND
C19
PLL_MOD
I
PLL mode select in an audio multiplex decoder (Fixed “L”)
GND
M5
AFEVDDA
—
Analogue power supply (3.3V) for A-ch AFE
B3.3V
P5
AFEVDDB
—
Analogue power supply (3.3V) for B-ch AFE
B3.3V
U5
AFEVDDC
—
Analogue power supply (3.3V) for C-ch AFE
B3.3V
K3
AFEVSSA
—
Analogue ground for A-ch AFE
GND
K4
AFEVSSA
—
Analogue ground for A-ch AFE
GND
L3
AFEVSSA
—
Analogue ground for A-ch AFE
GND
L4
AFEVSSA
—
Analogue ground for A-ch AFE
GND
L5
AFEVSSA
—
Analogue ground for A-ch AFE
GND
N4
AFEVSSB
—
Analogue ground for B-ch AFE
GND
P3
AFEVSSB
—
Analogue ground for B-ch AFE
GND
P4
AFEVSSB
—
Analogue ground for B-ch AFE
GND
T3
AFEVSSC
—
Analogue ground for C-ch AFE
GND
T4
AFEVSSC
—
Analogue ground for C-ch AFE
GND
U3
AFEVSSC
—
Analogue ground for C-ch AFE
GND
N5
ADCVDDA
—
Analogue power supply (1.5V) for A-ch A/D converters
B1.5V
R5
ADCVDDB
—
Analogue power supply (1.5V) for B-ch A/D converters
B1.5V
Pin No.
Pin Name
I/O
Pin Function
sheet name
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