DOWNLOAD Sharp SD-CX1 (serv.man10) Service Manual ↓ Size: 1.27 MB | Pages: 34 in PDF or view online for FREE

Model
SD-CX1 (serv.man10)
Pages
34
Size
1.27 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 7 - Waveforms, Troubleshooting tables, IC tables
File
sd-cx1-sm10.pdf
Date
PREV: Sharp SD-CX1 (serv.man9) Service Manual

Sharp SD-CX1 (serv.man10) Service Manual ▷ View online

– 85 –
SD-CX1H
ICU01 VHiLC75341M-1: Audio Processor (LC75341M)
1
DI
Serial data and clock input terminal for control.
2
CE
Chip enable terminal.
When changing from "H" to "L", data is written in the internal latch and each analog switch is turned on.
Data transmission is enabled at "H" level.
3
VSS
Ground terminal.
4
LOUT
Bass band filter construction capacitor/resistor connection terminal and bass/treble output terminal.
5
LBASS
Bass band filter capacitor and resistor connection terminal.
6
LTRE
Treble band filter capacitor connection terminal.
7
LIN
L-CH signal input terminal.
8
LSEL0
Input selector output terminal.
9-12 (11*)
L4-L1
Input signal terminal.
13-16 (14*) R1-R4
Input signal terminal.
17
RSEL0
Input selector output terminal.
18
RIN
R-CH signal input terminal.
19
RTRE
Treble band filter capacitor connection terminal.
20
RBASS
Bass band filter capacitor and resistor connection terminal.
21
ROUT
Bass band filter capacitor/resistor connection terminal and bass/treble output terminal.
22
Vref
0.5 
×
 VDD voltage generation section for analog ground. Connect a capacitor of 10
µ
F or more between
Vref and AVSS (VSS) as a countermeasure against the power supply ripple.
23
VDD
Power supply terminal.
24
CL
Serial data and clock input terminal for control.
Pin No.
Terminal Name
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Figure 85 BLOCK DIAGRAM OF IC
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
LC75341M
CL
VDD
VREF
ROUT
RBASS
RTRE
RIN
RSELO
R4
R3
R2
R1
DI
CE
VSS
LOUT
LBASS
LTRE
LIN
LSEL0
L4
L3
L2
L1
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
LVref
RVref
CCB
INTERFACE
CONTROL
CIRCUIT
LOGIC
CIRCUIT
CONTROL
CIRCUIT
ROUT
RBASS
RTRE
RIN
RSELO
L1
L2
L3
L4
R1
R2
R3
R4
LOUT
LBASS
LTRE
LIN
LSELO
VSS
CE
DI
CL
VDD
Vref
SD-CX1H
– 86 –
1
VDDL
Input
L channel digital output section power terminal
2
OUTL (+)
Output
L channel forward output terminal
3
OUTL (–)
Output
L channel reverse output terminal
4
GNDD
—
Digital output section ground terminal
5
OUTR (–)
Output
R channel reverse output terminal
6
OUTR (+)
Output
R channel forward output terminal
7
VDDR
Input
R channel digital output section power terminal
8
VDDX
Input
Oscillation section power terminal
9
XI
Input
Quartz oscillator connection terminal. Clock necessary for the system is generated.
10
XO
Output
Quartz oscillator connection terminal. Clock necessary for the system is generated.
11
GNDX
—
Oscillation section ground terminal
12*
MCK
Output
System clock output terminal
13
TEST
Input
Test terminal. As usual, it is used at "L".
14
NFR1 (+)
Input
R channel forward signal feedback input terminal
15
NFR2 (–)
Input
R channel reverse signal feedback input terminal
16
GNDA
—
Analog ground terminal for AD converter
17
Rch IN
Input
R channel analog input terminal
18
Rch Vref
Input
Reference voltage terminal for R channel
19
Lch Vref
Input
Reference voltage terminal for L channel
20
Lch IN
Input
L channel analog input terminal
21
RESET
Input
Reset terminal. It is reset with "L".
22
NFL2 (–)
Input
L channel reverse signal feedback input terminal
23
NFL1 (+)
Input
L channel forward signal feedback input terminal
24
VDDA
Input
Analog current terminal for AD converter
Pin No.
Port Name
Input/Output
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
ICA100 RH-iX2815AFZZ: 1 Bit AD Converter (IX2815AF)
Figure 86 BLOCK DIAGRAM OF IC
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VDDL
VDDA
NFL1(+)
NFL2(–)
RESET
Lch IN
Lch Vref
Rch Vref
Rch IN
GNDA
NFR2(–)
NFR1(+)
TEST
OUTL(+)
OUTL(–)
GNDD
OUTR(–)
OUTR(+)
VDDR
VDDX
XI
XO
GNDX
MCK
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VDA
NFL1(+)
NFL2(–)
RESET
Lch IN
Lch Vref
Rch Vref
Rch IN
GNDA
NFR2(–)
NFR1(+)
TEST
VDDL
OUTL(+)
OUTL(–)
GNDD
OUTR(–)
OUTR(+)
VDDR
VDDX
XI
XO
GNDX
MCK
Comparator
Comparator
Amplitude Doubling
Converter
Amplitude Doubling
Converter
Oscillator
R-ch 7th order 
∆
-
∑
Modulation Circuit
L-ch 7th order 
∆
-
∑
Modulation Circuit
– 87 –
SD-CX1H
1*
P77/AN7
_
Input
“L” = Output fixed
(A/D Input)
2
P76/AN6
KEY1
Input (A/D Input)
A/D KEY input 1
3
P75/AN5
KEY2
Input (A/D Input)
A/D KEY input 2
4
P74/AN4
KEY3
Input (A/D Input)
A/D KEY input 3
5
P73/AN3
P-DWN
Output
Vref voltage cut when detecting a power failure at SYS STOP
“H” = Normal state, “L” = Power failure
6
P72/AN2
TUNER_SM
Input (A/D Input)
Tuner tuning level detection. Output “L”
7
P71/AN0
PROTECT
Input (A/D Input)
Ignored for 500msec after detecting an error and turning the power
ON.When the input voltage is 2.5V or below, the power is turned OFF.
8
P70/AN0
SPAN
Input (A/D Input)
“L” in input
9
PB3
POWER
Output
Control of connection/disconnection on the primary side of power
supply. “H” = Connection, “L” = Disconnection
10
PB2/DA
H.P_SW
Input
Switch for headphone plug-in detection
“H” = Headphone, “L” = Speaker
11
P57/SRDY3/AN15
CD_OP/CL_SENS
Input (A/D Input)
Turnover voltage detection when locking the CD lid
1.5V or below = CLOSE, 3.8V or more = OPEN
12
P56/SCLK3/AN14
P56
Input
“L” = Output fixed
13
P55/SOUT3/AN13
P55
Input
“L” = Output fixed
14
P54/SIN3/AN12
P54
Input
“L” = Output fixed
15
P53/SRDY2/AN11
MD_LOAD_SW
Input
MD LOAD SW detection. L -> H = DISC IN
16
P52/SCLK2/AN10
MD_ST
Output
1. Beginning of tracks on CD: 20Ms. H output
2. MD ON (RESET): 100mS. H output
17
P51/SOUT2/AN9
MD_SERACH
Output
CD PLAY: “L” (including CUE/REVIEW)   Others: “H”
18
P50/SIN2/AN8
MD_RESET
Output
MD RESET output
19
P67/SRDY1/CS/SCLK12
MD_D_STB
Input
MD strobe input
20
P66/SCLK11
MD_D_SCK
Output
MD clock output
21
P65/SOUT1
MD_KDATA
Output
MD KEY data
22
P64/SIN1
MD_DATA
Input
MD data input
23
P63/CNTR1
CD_BUS3
Input/Output
Data input/output terminal for CD interface 3
“L” output fixed except CD function
24
P62/CNTR0
CD_BUS2
Input/Output
Data input/output terminal for CD interface 2
“L” output fixed except CD function
25
P61/PWM
CD_BUS1
Input/Output
Data input/output terminal for CD interface 1
“L” output fixed except CD function
26
P60
CD_BUS0
Input/Output
Data input/output terminal for CD interface 0
“L” output fixed except CD function
27
P47/T3OUT
CD_BUCK
Output
Clock output terminal for CD interface
“L” output fixed except CD function
28
P46/T1OUT
CD_CCE
Output
Chip enable output terminal for CD interface
“L” output fixed except CD function
29
P45/INT1/ZCR
P45
Input
Connected to GND
30*
P44/INT4
_
Input
“L” output fixed
31
P43/INT3
IC_CLK
Output
External control IC related clock
SANYO C bus, input/output expander
32
P42/INT2
REMOCON_IN
Input
Remote control input
33
P41
IC_DI
Output
External control IC related DATA output
SANYO C bus, input/output expander
34
P40/INT0
SYS_STOP
Input
Microcomputer backup detection
“H” = Normal state, “H” -> “L” = Power failure detection
35
RESET
RESET
Input
Microcomputer reset terminal
36
PB1/XCIN
IC_CE
Output
External control IC related chip enable output
SANYO CCB bus
37
PB0/XCOUT
IC_DO
Input
External control IC related DATA output
SANYO CCB bus
Pin
No.
Input/Output
Port Name
Terminal Name
ICD01  RH-iX0376AWZZ: System Microcomputer (IX0376AW) (1/2)
Remarks
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
SD-CX1H
– 88 –
ICD02/ICD03 VHiBU2092F/-1: Input/Output Expander (BU2092F)
1
VSS
GND
GND
2
DATA
DI
Serial data input.
3
CLOCK
CLK
Data shift clock.
4
LCK
LCK1
Data latch clock.
5
Q0
LED_RED
Red of three-colored LED. "H"= OFF, "L"= ON
6
Q1
LED_GREEN
Green of three-colored LED. "H"= OFF, "L"= ON
7
Q2
LED_BLUE
Blue of three-colored LED. "H"= OFF, "L"= ON
8*
Q3
LED_SP
MD normal mode, Green. "H"= OFF, "L"= ON
9*
Q4
LED_LP2
MD 2 times mode, Blue. "H"= OFF, "L"= ON
10*
Q5
LED_LP4
MD 4 times mode, Orange: "H"= OFF, "L"= ON
11*
Q6
LED_MONO
MONO indication LED. "H"= OFF, "L"= ON
12
Q7
LED_AUX
AUX function indication LED. "H"= OFF, "L"= ON
13
Q8
LED_TUNER
TUNER function indication LED. "H"= OFF, "L"= ON
14
Q9
LED_CD
CD function indication LED. "H"= OFF, "L"= ON
15
Q10
LED_MD
MD function indication LED. "H"= OFF, "L"= ON
16*
Q11
LED_GROUP
Group indication LED. "H"= OFF, "L"= ON
17
OE
GND
Output enable.
18
VDD
VDD
Power supply +5V
Pin No.
Terminal Name
Function
Port Name
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
38
XIN
X_IN
Input
Reference oscillation input. 8.38MHz crystal connection
39
XOUT
X_OUT
Output
Reference oscillation output. 8.38MHz crystal connection
40
VSS
VSS
—
Connected to GND
41
P27
IC_LCK2
Output
External control IC related latch clock output
For input/output expander No.2
42
P26
CD_PU_IN
Input
CD pickup position detection
“H” = Except “L”, “L” = CD pickup PUIN position
43
P25
DR_OP_IN
Input
CD door open detection switch
“H” = Except “L”, “L” = CD door OPEN completed
44
P24
DR_CL_IN
Input
CD door close detection switch
“H” = Except “L”, “L” = CD door CLOSE completed
45
P23/DIG19
IC_LCK1
Output
External control IC related latch clock output
For input/output expander No.1
46
P22/DIG18
CD_RESET
Output
For input/output expander No.1
“H” -> “L”: RESET operation
47
P21/DIG17
TIMER_LED
Output
Timer stand-by LED output.     On: “H”, Off: “L”
48
P20/DIG16
DIG1
Output
Digit output for FL No.1
49-56
P17/DIG15-P10/DIG08 DIG2-DIG9
Output
Digit output for FL No.2-No.9
57-60
P07/DIG07-P04/DIG04 DIG10-DIG13
Output
Digit output for FL No.10-No.13
61-64
P03/SEG35-P00/SEG32 SEG36-SEG33
Output
Segment output for FL No.36-No.33
65-72
P37/SEG31-P30/SEG24 SEG32-SEG25
Output
Segment output for FL No.32-No.25
73-80
P97/SEG23-P90/SEG16 SEG24-SEG17
Output
Segment output for FL No.24-No.17
81-88
P87/SEG15-P80/SEG08 SEG16-SEG9
Output
Segment output for FL No.16-No.9
89,90
PA7/SEG07,PA6/SEG06 SEG8,SEG7
Output
Segment output for FL No.8, No.7
91
VCC
VCC
Output
Power supply +5V
92-97
PA5/SEG05-PA0/SEG00 SEG6-SEG1
Output
Segment output for FL No.6-No.1
98
VEE
VEE
Input
Pull-down power supply for FL
99
AVSS
AVSS
—
A/D conversion section reference GND
100
VREF
VREF
Input
A/D conversion section reference power input +5V
Pin
No.
Input/Output
Port Name
Terminal Name
ICD01  RH-iX0376AWZZ: System Microcomputer (IX0376AW) (2/2)
Remarks
Page of 34
Display

Click on the first or last page to see other SD-CX1 (serv.man10) service manuals if exist.

RANDOM: