Sharp XL-40 Service Manual ▷ View online
– 41 –
XL-40H/50H
Figure 41 BLOCK DIAGRAM OF IC
IC401 VHiLC75342M-1: Function/Volume Equalizer (LC75342M)
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14 15 16 17
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26
5
27
28
30
29
1
2
3
4
LVref
RVref
CCB
INTERFACE
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
ROUT
RBASS1
RBASS2
RTRE
RIN
RSEL0
L1
L2
L3
L4
R1
R2
R3
R4
LOUT
LBASS2
LBASS1
LTRE
LIN
LSEL0
VSS CE
DI
CL VDD
NC
Vref
NC
NC
TEST
XL-40H/50H
– 42 –
1-4
COM3-COM0
Output
LCD common output terminal.
5-7
VLC3-VLC1
—
LCD power supply terminal.
8
VDD
—
Microcomputer power supply +5V.
9
OSC2
Output
Oscillator ground terminal for main clock. f=8MHz
10
OSC1
Input
Oscillator ground terminal for main clock. f=8MHz
11
VSS
—
Microcomputer power supply GND.
12
XI
Input
Oscillator ground terminal for sub clock. f=32.768kHz
13
XO
Output
Oscillator ground terminal for sub clock. f=32.768kHz
14
MMOD
Input
Memory mode selection terminal.
15
VREF-
—
Power supply GND for AD converter.
16
KEY0 AN0/PA0
Input
CD lid status detection input.
17
KEY1 AN0/PA1
Input
Operation button input, Max-8 buttons.
18
KEY2 AN0/PA2
Input
Operation button input, Max-8 buttons.
19
KEY3 AN0/PA3
Input
MODEL/TUNER destination input.
20*
KEY4 AN0/PA4
Input
Current detection of CD lid control motor.
Used to decide the CD lid drive error to control it.
Used to decide the CD lid drive error to control it.
21*
KEY5 AN0/PA5
Input
CD servo auto adjustment mode selection input.
22
KEY6 AN0/PA6
Input
Tape mechanism operating status detection input.
Decides the F.P/CAM-SW status with A/D value.
Decides the F.P/CAM-SW status with A/D value.
23
KEY7 AN7/PA7
Input
Tuner signal meter (S meter) voltage input terminal.
24
VREF+
—
Power supply for A/D converter +5V.
25
TXD SBO0/P00
Output
Data output terminal to TUNER PLL IC.
26
RXD SBI0/P01
Input
Data input from TUNER PLL IC
27
SBT0/P02
Output
Synchronous clock output with TUNER PLL IC
28
SBO1/P03
Output
Enable output of TUNER PLL IC. "L" = OFF "H" = ON
29
SBI1/P04
Output
Tape mechanism solenoid drive control output.
30
SBT1/P05
Output
Tape mechanism motor drive control output.
31
DK/BZER P06
Output
Recording/playback selection output of tape circuit.
"H" = Recording mode, "L" = Playback mode
"H" = Recording mode, "L" = Playback mode
32
RST/P27
Input
Reset signal input
33
RMOUT P10
Input
CLOCK/TIMER/SLEEP button input.
34
P11
Input
Tape run/END detection input. Decided as tape run if pulse is input.
35
TM2IO P12
Output
Recording bias oscillation circuit control output.
"H" = Bias oscillation, "L" = oscillation stop.
"H" = Bias oscillation, "L" = oscillation stop.
36
TM3IO P13
Output
Recording bias oscillation frequency selection control output.
37
TM4IO P14
Input
Power (POWER) button input detection.
38
IRQ0 P20
Input
Switches to the HALT mode when changing to . "L" at power failure detection input.
39
SENS IRQ1/P21
Input
Remote control signal input.
40
IRQ2 P22
Input
Synchronous clock input with RDS IC.
41
IRQ3 P23
Input
Jog dial UP pulse input.
42
IRQ4 P24
Input
Jog dial DOWN pulse input.
43*
P30
Output
SURROUND control output.
44
P31
Output
POWER IC STAND-BY terminal CONTROL.
45
P32
Output
Power mute output. "H" = MUTE ON "L" = MUTE OFF
46
LED0 WE/P50
Output
CD servo power supply circuit control output. "H" = CD power ON "L" = CD power OFF
47
LED1 RE/P51
Output
Main TRANS RELAY CONTROL. "H" = ON "L" = OFF
48
LED2 CS/P52
Input
Data input from RDS IC.
49
LDE3/S51 A16/P53
Input
Radio stereo broadcast reception detection input. "L" = During stereo broadcast reception
50
LED4/S50 A17/P54
Input
Broadcast reception status detection input. "L" = During broadcasting signal reception
51
SEG49 P60/A0
Output
LCD backlight control signal output. "H" = Backlight ON, "L" = Backlight OFF
52*
SEG48 P61/A1
Output
53
SEG47 P62/A2
Output
LED illumination control of electric JOG dial. "H" = ON "L" = OFF
Pin No.
Function
Terminal Name Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC701 RH-iX0026SJZZ: System Microcomputer (IX0026SJ) (1/2)
– 43 –
XL-40H/50H
Function
Terminal Name Input/Output
54
SEG46 P63/A3
Output
Electric JOG dial UP.
55
SEG45 P64/A4
Output
Electric JOG dial DOWN.
56*
SEG44 P65/A5
Output
Electric CD lid OPEN.
57*
SEG43 P66/A6
Output
Electric CD lid CLOSE.
58
SEG42 P67/A7
Input
CD pickup position detection SW input. "L" = Innerst periphery
59
SEG41 P70/A8
Output
Reset signal output for TC9462F
60
SEG40 P71/A9
Output
ON/OFF output terminal of CD servo control IC. "H" = Servo ON "L" = Servo stand-by
61-64
SEG39 P72/A10- Input/Output
Data input/output terminal for TC9462F control.
SEG36 P75/A13
65
SEG35 P76/A14
Output
Data synchronous clock output for TC9462F.
66
SEG34 P77/A15
Output
Chip enable terminal for TC9462F. "L" = BUS terminal active
67
SEG33 P87/D7
—
LCD segment output.
68
SEG32 P86/D6
—
LCD segment output.
69-74
SEG31 P85/D5-
—
LCD segment output
SEG26 P80/D0
Note:
Since RH-******SJZZ, SEG0 of the LCD is connected by the 24-pin LCD to SEG7 of the
microcomputer output terminal, and connections are made up to the shift SEG26 in order.
Since RH-******SJZZ, SEG0 of the LCD is connected by the 24-pin LCD to SEG7 of the
microcomputer output terminal, and connections are made up to the shift SEG26 in order.
75-100
SEG25-SEG0
—
LCD segment output
Note:
Since RH-******SJZZ, SEG0 of the LCD is connected by the 24-pin LCD to SEG7 of the
microcomputer output terminal, and connections are made up to the shift SEG26 in order.
Note:
Since RH-******SJZZ, SEG0 of the LCD is connected by the 24-pin LCD to SEG7 of the
microcomputer output terminal, and connections are made up to the shift SEG26 in order.
Pin No.
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
IC701 RH-iX0026SJZZ: System Microcomputer (IX0026SJ) (2/2)
Figure 43 BLOCK DIAGRAM OF IC
IC701 RH-iX0026SJZZ: System Microcomputer (IX0026SJ)
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O
O
O
O
O
O
O
O
I
I
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
I
O
O
O
O
O
I
I
I
O
O
I
I
I
I
I
I
O
O
O
O
O
O
O
I
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
O
O
O
O
O
O
O
O
O
O
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
COM3
COM2
COM1
COM0
COM2
COM1
COM0
VLC3
VLC2
VLC1
VLC2
VLC1
VDD
OSC2
OSC1
OSC1
VSS
XI
XO
MMOD
VREF-
CLID_SW
KEY1
KEY2
KEY2
MODEL
CLID_PRO
CD_CONF
TAPE_SW
TAPE_SW
VSM
VREF+
DI
SEG25
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
SEG26
SEG27
SEG28
SEG29
SEG30
SEG31
SEG32
SEG33
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
BUS2
BUS1
BUS0
CD_STB
CD_RES
PU-IN
CLID_DW
CLID_UP
MVOL_DW
MVOL_UP
MVOL_IND
B-LIGHT
DO
CL
CE
SOL
MOT
REC
RESET
CLOCK
RUN_PLS
BIAS
B-CAN
POWER
SYS STOP
REMOCON
CLE
JOG UP
JOG DOWN
SURR
P-STB
P-MUTE
CD+B
P-CONT
DATA
STEREO
SD
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
SEG14
SEG15
SEG16
SEG17
SEG18
SEG19
SEG20
SEG21
SEG22
SEG23
SEG24
XL-40H/50H
– 44 –
IC801 VHiTA2109F/-1:Servo Pre Amp. (TA2109F)
1
VCC
—
Power voltage terminal
2
FNI
Input
Main beam amp input terminal
3
FPI
Input
Main beam amp input terminal
4
TPI
Input
Sub-beam amp input terminal
5
TNI
Input
Sub-beam amp input terminal
6
MDI
Input
Monitor photodiode amp input terminal
7
LDO
Output
Laser diode amp output terminal
8
SEL
Input
Laser diode control signal input and APC circuit ON/OFF signal input terminal
9
TEB
Input
Tracking error balance adjustment signal input terminal
To be controlled by 3-value PWM signal. (PWM carrier = 88.2 kHz)
To be controlled by 3-value PWM signal. (PWM carrier = 88.2 kHz)
10
2VRO
Output
Standard voltage (2VR) output terminal. When Vcc = 5V, 2VR = 4.2V.
11
TEN
Input
Tracking error signal generation amp reversed phase input terminal
12
TEO
Output
Tracking error signal generation amp output terminal
13
SBAD
Output
Sub-beam addition signal output terminal
14
FEO
Output
Focus error signal generation amp output terminal
15
FEN
Input
Focus error signal generation amp reversed phase input terminal
16
VRO
Output
Standard voltage (VR) output terminal. When Vcc = 5V, VR = 2.1V.
17
RFRP
Output
Track count signal generation amp output terminal
18
RFIS
Input
RFRP detection circuit input terminal
19
RFGO
Output
RF signal output terminal
20
RFGC
Input
RF amplitude adjustment control signal input terminal
The amplitude of RF signal can be controlled by using the 3-value PWM signal (PWM
carrier = 88.2 kHz) which is output from the RFGC terminal of TC9432F.
The amplitude of RF signal can be controlled by using the 3-value PWM signal (PWM
carrier = 88.2 kHz) which is output from the RFGC terminal of TC9432F.
21
AGCI
Input
RF signal amplitude adjustment amp input terminal
22
RFO
Output
RF signal generation amp output terminal
23
GND
—
GND terminal
24
RFN
Input
RF reversed phase input terminal
Terminal Name
Pin No.
Input/Output
Function
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