Panasonic KX FLB758RU User Manual

7.3.5.2. DESCRIPTION OF BLOCK DIAGRAM IN ANALOG SECTION
 1. Function
The analog section works as an interface between the telepho ne line.
The analog ASIC (IC201) on the digital board exchan ges FAX TX and RX signals between the CODEC (IC609) and the analog
section.
The control signals transmitted to the analog section are output mainly from G/A IC610, and the analog status is stored as data
in G/A IC610.
 2.  Circuit Operation
[NCU]: Network Control Unit the NCU comprises of the followin g; DC loop...

7.3.5.3. BLOCK DIAGRAM
SPMUTE
SP(+)
SP(-)
R237
R236 C242R232
CN201
CD
FC
2
FC1
GN
D
VCC
3412
7658
R233
C246
C224
R206
VOLE-VOL(L)
IC202
C226
C244
R234 R222
C219
R218
R246
R219
TONE1
12V
R238
R208 C257 IC204-1
C247
IC203
VOL
E-VOL(R) IC202
12V
R254
C262
C270R250
R248
R249
C256
C254
IC204-2
TXA1
TXA2
LINEINCODEC IC609DIGITAL
15
14
2
3
FG
SA202
BELL
/BREAK
RLY
HSMIC(+)
HSMIC(-)
HSSP(-) HSSP(+)
16151413121110987654321
1817
0/-6
21222324252627282930313233343536
1920
A
5A
4A
3A
2A
1D
0/-1/-2/-3dBMUTE2...

7.4. CIS CONTROL SECTION
The scannin g block of this device consists of a control circuit and a contact image sensor made up of a celfoc lens array, an LED
array, and photoelectric conversion elements.
W hen an original document is inserted and the start button pressed, pin Y8 of IC604 goes to a high level and the transistor Q611
turns on.This applies voltage to the LED array to light it. The contact image sensor is driven by each of the FTG-F1 signals output
from IC604, and the original image...

7.5.1. ENGINE MOTOR DRIVE CIRCUIT
7.5.1.1. TIMING CHART
7.5. STEPPING MOTOR DRIVE SECTION
 1. Functions
This motor function s for main operations FAX reception and copy printing.
This feed recording paper synchro nized for printing.
 2.  Motor operation
Excitation pulses is output from ASIC (IC604) pins U8, W 9 Y9 and Y12. Then stepping pulses are output from driver IC (IC1)
pin No 9, 11, 15 and 19, and drives the motor coil.
During motor driving, pin N1 and pin R2 of ASIC IC604 becomes a low level.
As a...

7.5.1.2. ENGINE MOTOR DRIVE CIRCUIT
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7.5.2.1. TIMING CHART 7.5.2. ADF (Auto Document Feed) MOTOR DRIVE CIRCUIT
 1. Functions
This motor function s for main operations includin g FAX transmission, ADF copy and PC scan.
This feed document paper synchro nized for reading.
 2.  Motor operation
During motor driving, pin R3 of ASIC IC604 becomes a high level, and Q606, Q602 turns ON.
As a result, +24V is supplie d to the motor coil.
Steppin g pulses are output from ASIC IC604 pins, U6, Y7, W 7, V7, causing driver IC600 pins,...

DRIVE MODE
7.5.2.2. ADF (Auto Document Feed) MOTOR DRIVE CIRCUIT
FUNCTIONMODEPHASE PATTERNSPEED
SCANFAXSTANDARD1 - 2 phase833pps (t= 1/833)
SCANFAX/COPYFINE/HALF TONE1 - 2 phase833pps (t= 1/833)
SCANFAX/COPYSUPER FINE1 - 2 phase833pps (t= 1/833)
SCANPAPER FEED-1 - 2 phase833pps (t= 1/833)
STAND-BY-ALL PHASE OFF-
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7.5.3.1. TIMING CHART 7.5.3. CR (Carriage) MOTOR DRIVE CIRCUIT
 1. Functions
This motor function s for main operations includin g FAX transmission, FB copy and PC scan.
This feed document paper synchro nized for reading.
 2.  Motor operation
During motor driving, pin P4 of ASIC IC604 becomes a high level, and Q605, Q600 turns ON.
As a result, +24V is supplie d to the motor coil.
Steppin g pulses are output from ASIC IC604 pins, U6, Y7, W 7, V7, causing driver IC500 pins,
16~13todrivethemotorcoil.
The...

DRIVE MODE
7.5.3.2. CR (Carriage) MOTOR DRIVE CIRCUIT
FUNCTIONMODEPHASE PATTERNSPEED
SCANFAXSTANDARD1 - 2 phase833pps (t= 1/833)
SCANFAX/COPYFINE/HALF TONE1 - 2 phase833pps (t= 1/833)
SCANFAX/COPYSUPER FINE1 - 2 phase833pps (t= 1/833)
SCANNO SCANNING-1 - 2 phase1250pps (t= 1/1250)
STAND-BY-ALL PHASE OFF-
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7.6. FAN MOTOR SECTION
This FAN is used to radiate heat in the unit.
The signal level at pin 95/96 of IC610 becomes high, the FAN is activated.In this case, the pulse signal as shown below input
to pin 93 of IC610 and the rotation of the FAN is detected.
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