Sharp FO-2950M - B/W Laser - All-in-One, Service Manual

Page: 92 / 232

UX-4000MU
FO-2950MU/C
PIN I/O Signal Function
108 OB IRQ1# Interrupt request
109 OC GPO2 General purpose output
110 OC GPO1 General purpose output
111 OC GPO0 GPO0 (IA reset)
112 PWR VDD5 3.3V DSP Digital Power
113 PWR VGG 5V DSP Digital
114 GND DGND5 DSP Digital Ground
115 IB RESET# External reset
116 I XTALI Crystal in
117 O XTALO Crystal out
118 MI RESERVED Modem Interconnect
119 OB XCLK X clock output
120 IA GPI1 General purpose input
121 OA IRQ2# Interrupt request
122 MI SR3IN Modem Interconnect
123 MI RESERVED Modem Interconnect
124 MI RESERVED Modem Interconnect
125 GND DGND6 DSP Digital Ground
126 PWR DVAA 3.3V DSP analog power
127 GND AGND5 DSP Analog Ground
128 MI RESERVED Modem Interconnect
Note:
I/O:
MI = Modem interconnect
IA, IB = Digital input
OA, OB, OC = Digital output
I = Analog input
O = Analog output
–P signal: Primary IA
_S signal: Secondary IA
Reserved = Not connect
m. Image signal process block
CIS
VIDEO
SIGNAL
LC82103
ASIC
LOCAL
BUS
(IC6)
CLOCK
VREF+
VREF–
The CIS is driven by the LSI (LC82103), and the output video signal
from the CIS in input into the LC82103.
The ADC and buffer are provided in the LC82103, and the digital image
processing is performed.
n. Speaker amplifier
The speaker amplifier monitors the line under the on-hook mode, out-
puts the buzzer sound generated from the SH7041, ringer sound, DTMF
generated from the modem, and line sound.
o. Adjustment of voice/ringer volume
The voice/ringer volume can be adjusted by using the panel buttons
“UP” and “DOWN”.
• The ringer volume can be adjusted in the Stand-by mode by pressing
the UP/DOWN button.
• The reception level can be adjusted by pressing the UP/DOWN button
when the handset is located in the off-hook state.
• The speaker volume can be adjusted by using the speaker key.
FM214 (IC8) Terminal description
Fig. 22
5 – 20
manuals4you.com manuals4you.com