Read Sharp AL-1644 (serv.man14) Service Manual online
AL-1633/1644 ELECTRICAL SECTION 12-1
[12] ELECTRICAL SECTION
1. Block diagram
Scanner Unit
CCD PWB
12V
12V
Reg
A5V 3.3V
B/
W
R
G
8bits(MSB/LSB)
B
5V
ADCCLK,SYNCH,
BSAMP,VSAMP
SDI,SCLK,LOAD,OBE
MODE
LVTTL
MCU-PWB
3.3V
IEEE 1284 I/F
USB I/F
Printer CLK(20.3094MHz)
3.3V
RIC
Download
Scanner CLK(48MHz)
A[19:1]
D[15:0]
2Mb(1Mb*2)
8Mbit
I2C Bus
Shifter
MOTOR
4Kbyte
Other Loads
MPFS,RRS,
SGS,SRRC,SPUS,SPPS,
Toner Motor
Main Motor
Mirror Motor
VFMCNT,VFM,MPFS,CPFS2,
CPFS1
Other Inputs
CPU INTERRUPT
SPPD
CPU I/O
RTH DRST
I/F PWB
Zebra2 ASIC
(296pin)
CPU
H8S/2320
(19.6608MHz)
I
E
E
E
1
2
8
4
U
S
B
1
.
1
L
S
U
Polygon
Motor
(Leopard)
EEPROM
SDRAM
Simp 16Mbyte
Reset IC
SRAM
Driver
Flash ROM
AFE(
AD9826 or AD9822)
C
D
S
A
G
C
M
P
X
A
D
16bit
s
CCD Driver
CCFL
Lamp
Inverter
HOME
POSITION
SENSOR
CCD
(TCD2704)
CRUM
CPU CLK(19.6608MHz)
Software Reset
SSCG
SFMT0/1/2/3
PMD
Driver
MM_AI0/AI1/PH_A
MM_BI0/BI1/PH_B
OPU PWB
LC7935AN
7seg LED
LED
5V
HC151
KEY
5V
LVC1284
PDIUSBP11AD
START KEY
POWER SUPPLY
/POFF,HL,PR
FW
3.3V,5VEN,5V,24V
HVU
TC,GRID,MC,
BIAS
PMCLK(2078.74(Hz))
PSW
KIN1
SELIN1,2,3
OP-CLK
OP-LATCH
OP-DATA
OP-BEO
LED
PSL,ONL
MHPS
SHIFTER
Driver
DRUM
INITIAL
SW
Sensor
SFTHP
/VIDEO
S/H
APCSTT
/SYNC
SPMT0/1/2/3
SPF
Driver
SPFCLH, SPFGSOL SPFPSOL, SPFRSOL
Sensor
Driver
Selector
L1,2
W0,1,2,3
/SPFCOVER, PAPER, SPFOPEN, /SPFOUT
SPF MOTOR
TM+,TM-
/MMRDY
/MMD
PWM
12V,5V,3.3V
0 - 24V
HC151
CLON
2nd CASSETTE
Feed SOL , Pick up SOL
CASSETTE DETECTION,
PAPER DETECTION,
PAPER PASS DETECTION,
DOOR DETECTION
/MMRDY
SELIN1,2,3
Y1
PSOL
FSOL
SCAN1-6
LCX16374
UART
POWER
FAN
[12]ELECTRICALSECTION.fm 1 ページ ２００３年１１月２８日 金曜日 午前９時１７分
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