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 forming circuit to connect with the telepho ne line;
Switching circuit for other interconnecte d telepho nes; Bell detection circuit; Side tone circuit; Remote fax activation circuit.
Refer to NCU SECTION (P.227) for the details.
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							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
0/-1/-2/-3/-4/
0/-3-20/-30
0/-6/-12
DET
20
MIDATA MICLK MILAT
L235
L236
POS201
SA201
C278
T201
R292
R293 C310
C311
C312
IC207
C280
D201
C266
R258
R270 R280R284
C289 C300
C285
C288 R269
R287 R291
C340
C306
C309
R289
R276 R267
IC207
C243
D208
Q210
PC204 R237
PC203
R311
~ ~
R307
R310 Q211
D209
T202
TOHANDSET
CN204
C359
R201
R202
R203
C350 C351
R326 R343
R345
R338
C360
C349
C347
C338
C210
R324
R318
R207C330
R334
IC209
IC209
AGC
IC208 R325
C344
C327
R312
R323R337R340
KX-FLB758RU : ANALOG BOARD : BLOCK DIAGRAM
R321
R339R315
C340
C217
R223
R220
543
21
DC LOOP
IC201
D211 D212
R314
RY202
LPF
R204
R213
R212 C201
D213
C363
C355
D214
C343
-5/-6/-7/-8dBMUTE1
L238
L239
CN203
1
2
3
4
5
6
C324R308
C366
C317
R297 R301
C203
R205
C318R305
CN205 1
2
3
4
5
6
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							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 illuminated by the LED array undergoes photoelectric conversion to output an analog image
signal (SIG). The analog image signal is input to the system ASIC on SCIN (pin w5 of IC604) and converted into 8-bit data by the
A/D converter inside IC604. Then this signal undergoes digital processing in order to obtain a high-quality image.173
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							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 result, a current of about 1A are supplie d to the motor coil.
DRIVE MODE
FUNCTIONMODEPHASE PATTERNSPEEDCURERENT
PRINT-2 phase743pps (t=1/743)1A
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							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,
16~13todrivethemotorcoil.
The motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation.
A 1-step rotation feeds 0.042mm of document paper.
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							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 motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation.
A 1-step rotation feeds 0.042mm of document paper.
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							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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