Sharp UX-B800A, Service Manual, Page: 82 / 140

UX-B800A
5 – 12
IC600 (14D0830) Pin descriptions (2/2)
2.6. Panel control block
The following controls are performed by the CX93310.
• Operation panel key scanning
• Operation panel LCD display
• Sense the Original sensor, Front sensor and Door sensor.
2.7. Mechanism/recording control block
• Recording control block diagram
PIN
NO.
PIN NAME PIN DESCRPTION
45 VBULK Source pin for Vcc Reg. Place a 0.1uF
decoupling cap close to this pin.
46 VCC_SOURCE or
vccs
Source pin for Vcc reg. Flyback diode
should be placed close to this pin.
47 VBULK Source pin for VPH regulator. Place
0.1uF decoupling cap close to this pin.
48 VBULK Source pin for VPH regulator. Place
0.1uF decoupling cap close to this pin.
49 R_SENSE_VPH or
vphdsense
Pin connect for ext sense resister, if
used.
50 VPH_SOURCE or
vphs
Source pin for VPH regulator. Flyback
diode should be placed close to this
pin.
51 VBULK Source pin for VPH regulator. Flyback
diode should be placed close to this
pin.
52 VPH_GATE or
vphg
Ext gate drive output. N/C if not used.
PIN
NO.
PIN NAME PIN DESCRPTION
53 VPHSCLAMP VPH reg source clamp
54 VPH_LD_DET or
vphload
Load detect output pin
55 VPH_FB or vphfb Feedback pin for the VPH reg
56 LED1 Open collector output
57 LED2 Open collector output
58 LED3 Open collector output
59 TRML_SNS or
thermwarn
Thermal warning open collector output
60 DO1 Open collector output
61 DO2 Open collector output
62 DO3 Open collector output
63 MD1_PWM or
dc1pwm
Pwm pin input for mtr drvr #1
64 VBULK -
65 Thermal Pad, GND Should be closely grounded with other
ASIC grounds.
Fig. 4
MODEM
CX20452
LIU PWB
UNIT
SCANNER A/D
CX20556
CIS UNIT
INK
CARTRIDGE
MOTOR
DRIVER
OPERATION
PANLE UNIT
CRYSTAL
32.768kHZHz
CRYSTAL
12MHz
64Mbit SDRAM
16Mbit FLASH
(ROM)
16Mbit FLASH
(DATA)
FAX
CONTROLLER
CX93310
FEED
ENCODER
SENSOR
POWER SUPPLY
PWB UNIT
LCD UNIT
CARRIER
MOTOR
FEED
MOTOR
TX
MOTOR
PRINTER UNIT
HANDSET
CARRIER
ENCODER
SENSOR
PIN
SENSOR