Panasonic KX-FP701LA Service Manual

Plain Paper Fax with Copier

KX-FP701LA

(for Latin America)

ORDER NO. KMF0711124CE

KX-FP701LA

TABLE OF CONTENTS

PAG E PAG E

1 Safety Precautions -----------------------------------------------3

1.1. For Service Technicians ----------------------------------3

1.2. AC Caution---------------------------------------------------3

1.3. Personal Safety Precautions ----------------------------4

1.4. Service Precautions ---------------------------------------5

2Warning--------------------------------------------------------------6

2.1. About Lead Free Solder (PbF: Pb free) --------------6

2.2. Discarding of P. C. Board --------------------------------6

2.3. Insulation Resistance Test -------------------------------7

2.4. Battery Caution ---------------------------------------------7

3 Specifications ------------------------------------------------------8 4 General/Introduction---------------------------------------------9

4.1. Error Message ----------------------------------------------9

4.2. Optional Accessories------------------------------------ 10

5Features------------------------------------------------------------ 10 6 Technical Descriptions---------------------------------------- 11

6.1. Connection Diagram------------------------------------- 11

6.2. General Block Diagram --------------------------------- 12

6.3. Control Section ------------------------------------------- 14

6.4. Facsimile Section ---------------------------------------- 23

6.5. Sensors and Switches ---------------------------------- 32

6.6. Modem Section ------------------------------------------- 36

6.7. NCU Section----------------------------------------------- 43

6.8. ITS (Integrated telephone System) and Monitor Section -------------------------------------------46

6.9. Operation Board Section ------------------------------- 48

6.10. LCD Section ----------------------------------------------- 49

6.11. Power Supply Board Section-------------------------- 50

7 Location of Controls and Components------------------ 53

7.1. Overview --------------------------------------------------- 53

7.2. Control Panel---------------------------------------------- 53

8 Installation Instructions---------------------------------------54

8.1. Installation Space ----------------------------------------54

8.2. Connections -----------------------------------------------55

8.3. Installing the Ink Film------------------------------------ 56

8.4. Installing the Paper Tray ------------------------------- 57

8.5. Paper Support--------------------------------------------- 57

8.6. Installing the Recording Paper------------------------ 58

9 Operation Instructions ---------------------------------------- 59

9.1. Setting Your Logo ---------------------------------------- 59

10 Test Mode----------------------------------------------------------60

10.1. DTMF Signal Tone Transmit Selection ------------- 61

10.2. Button Code Table ---------------------------------------61

10.3. Print Test Pattern ----------------------------------------- 62

11 Serv ice Mode ----------------------------------------------------- 63

11.1. Programing and Lists------------------------------------ 63

11.2. The Example of the Printed List ---------------------- 67

12 Troubleshooting Guide---------------------------------------- 71

12.1. Troubleshooting Summary----------------------------- 71

12.2. Error Messages-Display -------------------------------- 72

12.3. Error Messages-Report--------------------------------- 74

12.4. Remote Programming----------------------------------- 96

12.5. Troubleshooting Details -------------------------------- 99

13 Service Fixture & Tools ------------------------------------- 132 14 Disassembly and Assembly Instructions ------------- 133

14.1. DISASSEMBLY FLOW CHART -------------------- 133

14.2. DISASSEMBLY PROCEDURE--------------------- 135

15 Maintenance ---------------------------------------------------- 150

15.1. Maintenance Items and Component Locations -150

15.2. GEAR SECTION----------------------------------------152

15.3. Jams -------------------------------------------------------157

15.4. Cleaning---------------------------------------------------159

16 Miscellaneous --------------------------------------------------162

16.1. Terminal Guide of the ICs Transistors and Diodes -----------------------------------------------------162

16.2. How to Replace the Flat Package IC --------------164

16.3. Test Chart-------------------------------------------------166

17 Schematic Diagram ------------------------------------------- 170

17.1. Digital Board (PCB1)----------------------------------- 170

17.2. Analog Board (PCB2) --------------------------------- 174

17.3. Operation Board (PCB3)------------------------------176

17.4. Power Supply Board (PCB4) ------------------------ 177

17.5. Interface Board (PCB5) -------------------------------178

17.6. Sensor Board (PCB6) ---------------------------------179

18 Printed Circuit Board-----------------------------------------181

18.1. Digital Board (PCB1)----------------------------------- 181

18.2. Analog Board (PCB2) --------------------------------- 183

18.3. Operation Board (PCB3)------------------------------185

18.4. Power Supply Board (PCB4) ------------------------ 187

18.5. Interface Board (PCB5) -------------------------------189

18.6. Sensor Board (PCB6) ---------------------------------191

19 Appendix Information of Schematic Diagram ------- 192 20 Exploded View and Replacement Parts List---------- 193

20.1. Cabinet, Mechanical and Electrical Parts Location ---------------------------------------------------193

20.2. Replacement Parts List ------------------------------- 202

KX-FP701LA

1 Safety Precautions

1. Before servicing, unplug the AC power cord to prevent an electric shock.

2. When replacing parts, use only the manufacturer's recommended components.

3. Check the condition of the power cord. Replace if wear or damage is evident.

4. After servicing, be sure to restore the lead dress, insulation barriers, insulation papers, shields, etc.

5. Before returning the serviced equipment to the customer, be sure to perform the following insulation resistance test to prevent the customer from being exposed to shock hazards.

1.1. For Service Technicians

• Repair service shall be provided in accordance with repair technology information such as service manual so as to prevent fires, injury or electric shock, which can be caused by improper repair work.

1. When repair services are provided, neither the products nor their parts or members shall be remodeled.

2. If a lead wire assembly is supplied as a repair part, the lead wire assembly shall be replaced.

3. FASTON terminals shall be plugged straight in and unplugged straight.

• ICs and LSIs are vulnerable to static electricity.

When repairing, the following precautions will help prevent recurring malfunctions.

1. Cover plastic parts boxes with aluminum foil.

2. Ground the soldering irons.

3. Use a conductive mat on worktable.

4. Do not grasp IC or LSI pins with bare fingers.

1.2. AC Caution

For safety, before closing the lower cabinet, please make sure of the following precautions.

1. The earth lead is fixed with the screw.

2. The AC lead is connected properly to power supply board.

3. Wrap the earth lead around the core 3 times.

4. Wrap the AC lead around the core 2 times.

KX-FP701LA

1.3. Personal Safety Precautions

1.3.1. Moving Sections of the Unit

Be careful not to let your hair, clothes, fingers, accessories, etc., become caught in any moving sections of the unit. The moving sections of the unit are the rollers and a gear. There is a separation roller and a document feed roller which are rotated by the document feed motor. A gear rotates the two rollers. Be careful not to touch them with your hands, especially when the unit is operating.

1.3.2. Live Electrical Sections

All the electrical sections of the unit supplied with AC power by the AC power cord are live. Never disassemble the unit for service with the AC power supply plugged in.

CAUTION:

AC voltage is supplied to the primary side of the power supply unit. Therefore, always unplug the AC power cord before disassembling for service.

KX-FP701LA

1.4. Service Precautions

1.4.1. Precautions to Prevent Damage from static Electricity

Electrical charges accumulate on a person. For instance, clothes rubbing together can damage electric elements or change their electrical characteristics. In order to prevent static electricity, touch a metallic part that is grounded to release the static electricity. Never touch the electrical sections such as the power supply unit, etc.

KX-FP701LA

2Warning

2.1. About Lead Free Solder (PbF: Pb free)

Note:

In the information below, Pb, the symbol for lead in the periodic table of elements, will refer to standard solder or solder that contains lead.

We will use PbF solder when discussing the lead free solder used in our manufacturing process which is made from Tin, (Sn), Silver, (Ag), and Copper, (Cu).

This model, and others like it, manufactured using lead free solder will have PbF stamped on the PCB. For service and repair work we suggest using the same type of solder.

Caution

• PbF solder has a melting point that is 50° ~ 70° F, (3 0 ° ~ 40°C) higher than Pb solder. Please use a soldering iron with temperature control and adjust it to 700° ± 20° F, (370° ± 10°C).

• Exercise care while using higher temperature soldering irons.: Do not heat the PCB for too long time in order to prevent solder splash or damage to the PCB.

• PbF solder will tend to splash if it is heated much higher than its melting point, approximately 1100°F, ( 60 0 °C).

• When applying PbF solder to double layered boards, please check the component side for excess which may flow onto the opposite side (See figure, below).

2.1.1. Suggested PbF Solder

There are several types of PbF solder available commercially. While this product is manufactured using Tin, Silver, and Copper, (Sn+Ag+Cu), you can also use Tin and Copper, (Sn+Cu), or Tin, Zinc, and Bismuth, (Sn+Zn+Bi). Please check the manufacturer’s specific instructions for the melting points of their products and any precautions for using their product with other materials. The following lead free (PbF) solder wire sizes are recommended for service of this product: 0.3mm, 0.6mm and 1.0mm.

2.2. Discarding of P. C. Board

When discarding P. C. Board, delete all personal information such as telephone directory and caller list or scrap P. C. Board.

KX-FP701LA

2.3. Insulation Resistance Test

1. Unplug the power cord and short the two prongs of the plug with a jumper wire.

2. Turn on the power switch.

3. Measure the resistance value with an ohmmeter between the jumpered AC plug and each exposed metal cabinet part (screw heads, control shafts, bottom frame, etc.). Note: Some exposed parts may be isolated from the chassis by design. These will read infinity.

4. If the measurement is outside the specified limits, there is a possibility of a shock hazard.

2.4. Battery Caution

Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instruction.

CAUTION: The lithium battery is a critical component (type No. CR2032). Please observe for the proper polarity and the exact location when replacing it and soldering the replacement lithium battery in.

KX-FP701LA

3 Specifications

Any details given in these instructions are subject to change without notice.

Applicable Lines: Public Switched Telephone Network Document Size: Max. 216 mm in width, Max. 600 mm in length Effective Scanning Width: 208 mm Recording Paper Size: Letter: 216 mm × 279 mm Effective Printing Width: 208 mm Recording Paper Weight:

60 g/m

to 90 g/m

Transmission Speed*1 : Approx. 12 s/page* Scanning Density: Horizontal: 8 pels/mm

Ver tica l:

3.85 lines/mm (standard resolution)

7.7 lines/mm (fine/photo resolution)

15.4 lines/mm (super fine resolution)

Photo Resolution: 64 levels Scanner Type: Contact Image Sensor Printer Type: Thermal Transfer on plain paper Data Compression System: Modified Huffman (MH), Modified READ (MR), Modified Modified READ (MMR) Modem Speed: 9,600 / 7,200 / 4,800 / 2,400 bps; Automatic Fallback Operating Environment: 5—35°C, 20—80 % RH (Relative Humidity) Dimensions: Approx. height 185 mm × width 355 mm × depth 272 mm Mass (Weight): Approx. 3.5 kg Power Consumption: Standby: Approx. 1.5 W

Transmission: Approx. 12 W Reception: Approx. 30 W (When receiving a 20% black document)

Copy: Approx. 40 W (When copying a 20% black document) Maximum: Approx. 135 W (When copying a 100% black document)

Power Supply: 120 V AC, 60 Hz

Fax Memory Capacity*

Transmission: Approx. 25 pages Reception: Approx. 28 pages (Based on the ITU-T No. 1 Test Chart in standard resolution, without using the Error

Correction Mode.)

Transmission speed depends on the contents of the pages, resolution, telephone line conditions and capability of the other

party’s machine.

Transmission speed is based on the ITU-T No. 1 Test Chart with memory scanning original mode. If the capability of the other

party’s machine is inferior to your unit, the transmission time may be longer. (Refer to 16.3.1.ITU-T No.1 Test chart (P.166).)

If an error occurs during fax reception, such as a paper jam or if the recording paper runs out, the fax and subsequent faxes will be retained in memory.

4 General/Introduction

4.1. Error Message

4.1.1. Display

KX-FP701LA

4.1.2. Report

KX-FP701LA

4.1.3. Other

4.2. Optional Accessories

Model No. Description Specification

KX-FA57A

To ensure the unit operates properly, we recommend using the Panasonic replacement film.

The ink film is not reusable. Do not rewind and use the ink film again.

Replacement Film

70 m × 1 rolls (Prints about 225 Letter-sized pages)

5Features

General

• LCD (Liquid Crystal Display) readout

Plain Paper Facsimile Machine

• 12 second transmission speed*

• A4, Letter, G3 compatible

• Automatic document feeder (up to 10 sheets)

• Quick scan

• Resolution: Standard/Fine/Super fine/Photo (64 level)

• Broadcast

• 50-sheet recording paper capacity

• Automatic fax/phone switching

• Distinctive ring detection ** * The 12 second speed is based upon the ITU-T No. 1 Test Chart on the condition that memory transmission is performed. ** Subscription to distinctive ring services is required.

Large Memory... Performed by DRAM

Approx. 28 pages of memory reception Approx. 25 pages of memory transmission

Integrated Telephone System

• On-hook dialing

• Voice muting

• Redialing function

• 106-station telephone directory with Phonebook

• Caller ID service This unit is compatible with the Caller ID service offered by your local telephone company. To use this unit’s Caller ID features, you must subscribe to Caller ID service. Important:

- This unit will only display the caller’s telephone number and name.

- This unit will not support future additional telephone services.

- Depending on the service of the local telephone company, the date/time of the call or the caller’s name may not be displayed.

Make sure the following ring count is set to 2 or more rings beforehand.

- FAX ring count (feature #06 on P.97)

- The name display service may not be available in some areas. For further information, please contact your telephone company.

Enhanced Copier Function

• Multi-copy function (up to 50 copies)

• Enlargement and reduction

•Collate

• 64-Level halftone

6 Technical Descriptions

6.1. Connection Diagram

KX-FP701LA

6.2. General Block Diagram

The following is an outline of each device IC on the digital board. (Refer to 6.2.1.General Block Diagram (P.13).).

1. ASIC (IC1) Composed mainly of an address decoder and a modem control. Controls the general FAX operations. Controls the operation panel I/F. Controls the thermal head I/F and CIS I/F. Performs the image processing. CPU and Real time clock Provides the reset pulse for each of the major ICs.

2. Flash ROM (IC6) Contains all of the program instructions on the unit operations. This memory is used mainly for the parameter working in the storage area.

3. Dynamic RAM (IC4) This memory is used mainly for the parameter working in the storage area.

4. MODEM (IC5) Performs the modulation and the demodulation for FAX communication.

5. Read Section “Contact Image Sensor “(CIS) to read transmitted documents.

6. Motor Driver (IC401,IC402) Drives the transmission motor and the reception motor.

7. Thermal Head Contains heat-emitting elements for dot matrix image printing.

8. Analogue Board Composed of ITS circuit and NCU circuit.

9. Sensor Section Composed of a cover open, a document set switch, a document top switch, a paper top sensor.

10. Power Supply Board Switching Section Supplies +6V and +24V to the unit.

6.2.1. General Block Diagram

KX-FP701LA

6.3. Control Section

6.3.1. Block Diagram

IC5

MODEM

]

Analog

Board

CN7

XRD

XWR

XCS

IC13

SP-AMP

D[7:0]

A[4:0]

]

IC4

IC6

]

DRAM

FLASH

A[9:0]

A[17:0]

D[7:0]

XRD

XWR

XCS

XRAS

XCAS

+3.3V

XWR

32.256MHz BATT

+3.3V/BATT

KX-FP701LA : CONTROL SECTION BLOCK DIAGRAM

+3.3V+2.5V

+2.5V/BATT

+5V

+3.3V

OUT

IC3

RESET-IC

GND

VDET

IC1

ASIC

OP-RESET

CN2 to CN404

RBA[5:0]

ADR[12:0]

ADR[15:13]

KSTART,KLATCH

KSCLK,KTXD

KRXD

Operation

Board

DB[7:0]

+5V

CN4

XRD

XWR

F1,FTG

VIDEO

CIS

CISLEDON

THLAT,THC,THDAT

CN1,2

Q2,4,14

STB1,STB2

IC7

AND

HEADON

XROMCS

XOPRBE

RXE

RXE,RM0~3

TXE,TM0~3

XRAS

XCAS

REED,PTOP,COVER OPEN

XMDMCS

XRESET

XRESETI

XWDERR

XORESET

+3.3V/BATT

+2.5V/BATT

XBACKEN

24MHz

32.768KHz

6.3.2. Memory Map

KX-FP701LA

6.3.3. ASIC (IC1)

This custom IC is used for the general FAX operations.

1. CPU: This model uses a Z80 equivalent to the CPU operating at 12 MHz. Most of the peripheral functions are performed by custom-designed LSIs. Therefore, the CPU only works for processing the results.

2. RTC: Real Time Clock

3. DECODER: Decodes the address.

4. ROM/RAM I/F: Controls the SELECT signal of ROM or RAM and the bank switching.

5. CIS I/F: Controls the document reading.

6. IMAGE DATA RAM: This memory is programmed into the ASIC and uses 8 KB for the image processing. (See Fig. A.*)

7. THERMAL HEAD I/F: Transmits the recorded data to the thermal head.

8. MOTOR I/F: Controls the transmission motor which feeds the document. Controls the receiving motor which feeds the recording paper.

9. OPERATION PANEL I/F: Serial interface with Operation Panel.

10. I/O PORT: I/O Port Interface.

11. ANALOGUE UNIT: Electronic volume for the monitor. Sends beep tones, etc.

Fig. A

Note:

This memory is incorporated into the ASIC (IC1) and used for the image processing. Fig. A shows the memory map of the Image Data RAM.

Descriptions of Pin Distribution (IC1)

KX-FP701LA

NO. SIGNAL I/O POWER SUPPLIED

VOLTAGE

1 VSSA GND POWER SOURCE (ANALOG GND)

2 VDDA 3.3 3.3V POWER SOURCE (ANALOG +3.3V)

3 AIN1 A 3.3V CIS IMAGE SIGNAL INPUT (SIG)

4 AIN2 A 3.3V THERMISTOR TEMPERATURE WATCH INPUT

5 AIN3 A 3.3V LINE VOLTAGE DETECTION SIGNAL INPUT (DCIN)

6 AMON A 3.3V ANALOG SIGNAL MONITOR TERMINAL

7 VSS GND POWER SOURCE (GND)

8 X32OUT O 3.3V/BATT RTC (32.768KHz) CONNECTION

9 X32IN I 3.3V/BATT RTC (32.768KHz) CONNECTION

10 VDD (3.3V / B) ----- POWER SOURCE (+3.3V/LITHIUM BATTERY)

11 XBACEN I 3.3V/BATT BACKUP ENABLE

12 XRAMCS O 3.3V/BATT NOT USED

13 VDD (3.3V / B) ----- POWER SOURCE(+3.3V / LITHIUM BATTERY)

14 VDD (2.5V/B) ----- POWER SOURCE (+2.5V / LITHIUM BATTERY)

15 FTG O 3.3V START SIGNAL OUTPUT FOR CIS (SI)

16 F1 O 3.3V CLOCK SIGNAL OUTPUT FOR CIS (CLK)

17 F2/OP O 3.3V OUTPUT PORT (THON)

18 FR/OP O 3.3V OUTPUT PORT (MDMRST)

19 CPC I 3.3V INPUT PORT (BELL/CPC)

20 RVN I 3.3V INPUT PORT (REED)

21 IRDATXD/IOP O 3.3V OUTPUT PORT (NOT USED)

22 IRDARXD/IOP80 O 3.3V OUTPUT PORT (NOT USED)

23 TXD/IOP O 3.3V OUTPUT PORT (FILMEND)

24 RXD/IOP O 3.3V OUTPUT PORT (NOT USED)

25 XRTS/IOP O 3.3V OUTPUT PORT (NOT USED)

26 XCTS/IOP O 3.3V OUTPUT PORT (NOT USED)

27 VDD (2.5V) ----- POWER SOURCE (+2.5V)

28 TONE1 A 3.3V TONE OUTPUT

29 TONE2 A 3.3V TONE OUTPUT

30 VOLUREF A 3.3V ANALOG REF VOLTAGE

31 VOLUOUT A 3.3V VOLUME OUTPUT

32 VOLUIN A 3.3V VOLUME INPUT

33 XNMI I 3.3V HIGH FIXED

34 FMEMDO/IOP O 3.3V OUTPUT PORT (CISLED)

35 VDD (3.3V) ----- POWER SOURCE (+3.3V)

36 VSS GND POWER SOURCE (GND)

37 VSS GND POWER SOURCE (GND)

38 VDD (3.3V) ----- POWER SOURCE (+3.3V)

39 MIDAT/IOP O 3.3V OUTPUT PORT (TONE1EN)

40 MICLK/IOP O 3.3V OUTPUT PORT (HSTX MUTE)

41 MILAT/IOP O 3.3V OUTPUT PORT (HS RX EN)

42 20KOSC/IOP O 3.3V OUTPUT PORT (CIS ON)

43 XWAIT I 3.3V INPUT PORT (HOOK)

44 HSTRD/IOP O 3.3V OUTPUT PORT (RLY)

45 HSTWR/IOP O 3.3V OUTPUT PORT (NOT USED)

46 XOPRBE O 3.3V MFCS

47 ADR15 O 3.3V CPU ADDRESS BUS 15 (NOT USED)

48 ADR14 O 3.3V CPU ADDRESS BUS 14 (NOT USED)

49 ADR13 O 3.3V CPU ADDRESS BUS 13 (NOT USED)

50 VDD (2.5V) ----- POWER SOURCE (+2.5V)

51 XOUT O 3.3V SYSTEM CLOCK (24MHz)

52 XIN I 3.3V SYSTEM CLOCK (24MHz)

53 VSS GND POWER SOURCE (GND)

54 VDD (3.3V) ----- POWER SOURCE (+3.3V)

55 XTEST O 3.3V 24MHz CLOCK

56 TEST1 I 3.3V HIGH FIXED

DESCRIPTION

KX-FP701LA

NO. SIGNAL I/O POWER SUPPLIED

DESCRIPTION

VOLTAGE

57 TEST2 I 3.3V HIGH FIXED

58 TEST3 I 3.3V HIGH FIXED

59 TEST4 I 3.3V HIGH FIXED

60 XMDMINT I 3.3V MODEM INTERRUPT

61 XMDMCS O 3.3V MODEM CHIP SELECT

62 XRAS/IOP O 3.3V DRAM (IC4) ROW ADDRESS STROBE

63 XCAS1/IOP O 3.3V DRAM (IC4) CULUMN ADDRESS STROBE

64 XCAS2/IOP O 3.3V OUTPUT PORT (NOT USED)

65 XRESCS2 O 3.3V FLASH CHIP SELECT (XRESCS2)

66 DB3 I/O 3.3V CPU DATA BUS 3

67 DB2 I/O 3.3V CPU DATA BUS 2

68 DB4 I/O 3.3V CPU DATA BUS 4

69 DB1 I/O 3.3V CPU DATA BUS 1

70 DB5 I/O 3.3V CPU DATA BUS 5

71 VDD (3.3V) ----- POWER SOURCE (+3.3V)

72 VSS GND POWER SOURCE (GND)

73 VSS GND POWER SOURCE (GND)

74 VDD (3.3V) ----- POWER SOURCE (+3.3V)

75 DB0 I/O 3.3V CPU DATA BUS 0

76 DB6 I/O 3.3V CPU DATA BUS 6

77 DB7 I/O 3.3V CPU DATA BUS 7

78 XROMCS O 3.3V ROM (IC6) CHIP SELECT

79 RD O 3.3V CPU RD

80 WR O 3.3V CPU WR

81 ADR0 O 3.3V CPU ADDRESS BUS 0

82 ADR1 O 3.3V CPU ADDRESS BUS 1

83 ADR2 O 3.3V CPU ADDRESS BUS 2

84 ADR3 O 3.3V CPU ADDRESS BUS 3

85 ADR4 O 3.3V CPU ADDRESS BUS 4

86 ADR5 O 3.3V CPU ADDRESS BUS 5

87 VSS GND POWER SOURCE (GND)

88 VDD (2.5V) ----- POWER SOURCE (+2.5V)

89 ADR6 O 3.3V CPU ADDRESS BUS 6

90 ADR7 O 3.3V CPU ADDRESS BUS 7

91 ADR8 O 3.3V CPU ADDRESS BUS 8

92 ADR9 O 3.3V CPU ADDRESS 9

93 ADR10 O 3.3V CPU ADDRESS 10

94 ADR11 O 3.3V CPU ADDRESS 11

95 ADR12 O 3.3V CPU ADDRESS 12

96 RBA0 O 3.3V ROM/RAM BANK ADDRESS 0

97 RBA1 O 3.3V ROM/RAM BANK ADDRESS 1

98 RBA2 O 3.3V ROM/RAM BANK ADDRESS 2

99 RBA3 O 3.3V ROM/RAM BANK ADDRESS 3

100 RBA4 O 3.3V ROM/RAM BANK ADDRESS 4

101 RBA5 O 3.3V ROM/RAM BANK ADDRESS 5

102 RBA6/IOP96 O 3.3V OUTPUT PORT (PTOP SEN ON)

103 STB1 O 3.3V STROBE SIGNAL OUTPUT TO THERMAL HEAD

104 STB2 O 3.3V STROBE SIGNAL OUTPUT TO THERMAL HEAD

105 STB3 O 3.3V (NOT USED)

106 XRESET I 3.3V RESET INPUT

107 VDD (3.3V) ----- POWER SOURCE (+3.3V)

108 VSS GND POWER SOURCE (GND)

109 VSS GND POWER SOURCE (GND)

110 VDD (3.3V) ----- POWER SOURCE (+3.3V)

111 XORESET O 3.3V SYSTEM RESET OUTPUT

112 VDD(5V) ----- POWER SOURCE (+5V)

113 VSS GND POWER SOURCE (GND)

KX-FP701LA

NO. SIGNAL I/O POWER SUPPLIED

VOLTAGE

114 XRESETI I 3.3V RESET INPUT

115 WDERR O 3.3V WATCHED ERROR OUTPUT SIGNAL

116 THDAT O 3.3V RECORDED IMAGE OUTPUT (XTHDAT)

117 THCLK O 3.3V CLOCK OUTPUT FOR DATA TRANSFER (XTHCLK)

118 THLAT O 3.3V PULSE OUTPUT FOR DATA LATCH (XTHLAT)

119 STBNP I 0V INPUT PORT (NOT USED)

120 RM0/IOP O 3.3V RX MOTOR A PHASE

121 RM1/IOP I/O 3.3V RX MOTOR B PHASE

122 RM2/IOP I/O 3.3V RX MOTOR /A PHASE

123 RM3/IOP I/O 3.3V RX MOTOR /B PHASE

124 RXE/IOP O 3.3V RX MOTOR ENABLE

125 TMO O 3.3V TX MOTOR A PHASE

126 VDD (2.5V) ----- POWER SOURCE (+2.5V)

127 VSS GND POWER SOURCE (GND)

128 TM1/IOP O 3.3V TX MOTOR B PHASE

129 TM2/IOP O 3.3V TX MOTOR /A PHASE

130 TM3/IOP O 3.3V TX MOTOR /B PHASE

131 TXE/IOP O 3.3V TX MOTOR ENABLE

132 KSTART O 3.3V OPERATION PANEL CONTROL

133 KLATCH O 3.3V OPERATION PANEL CONTROL

134 KSCLK O 3.3V OPERATION PANEL CONTROL

135 KTXD O 3.3V OPERATION PANEL CONTROL

136 KRXD I 3.3V OPERATION PANEL CONTROL

137 FMEMCLK/IOP O 3.3V OUTPUT PORT (OP RESET)

138 FMEMDI/IOP O 3.3V OUTPUT PORT (SP MUTE)

139 ADSEL1 O 3.3V CHANNEL SELECT SIGNAL FOR AIN2

140 VDDA (2.5V) 2.5V POWER SOURCE (ANALOG +2.5V)

141 VREFB A 3.3V A/D CONVERTER'S ZERO STANDARD VOLTAGE

OUTPUT

142 VCL A 3.3V ANALOG PART STANDARD VOLTAGE SIGNAL

143 VREFT A 3.3V A/D CONVERTER'S FULL SCALE VOLTAGE OUTPUT

144 VSSA GND POWER SOURCE (ANALOG GND)

DESCRIPTION

6.3.4. Flash Memory (IC6)

This 512KB ROM (FLASH MEMORY) carries a common area of 32KB and bank areas which each have 8KB (BK4~BK63). The addresses from 0000H to 7FFFH are for the common area and from 8000H to 9FFFH are for the bank areas.

6.3.5. Dynamic RAM (IC4)

The DRAM serves as CPU and receives memory. The address is F200H~F3FFH (DRAM access window 1) and F600H~F7FFH (DRAM access window 2).

KX-FP701LA

6.3.6. Reset Circuit (Watch dog timer)

The output signal (reset) from pin 4 of the voltage detect IC (IC3) is input to the ASIC (IC1) 114 pin.

1. During a momentary power interruption, a positive reset pulse of 50~70 msec is generated and the system is reset completely.

2. The watch dog timer, built-in the ASIC (IC1), is initialized by the CPU about every 1.5 ms. When a watch dog error occurs, pin 115 of the ASIC (IC1) becomes low level. The terminal of the 'WDERR' signal is connected to the reset line, so the 'WDERR' signal works as the reset signal.

6.3.7. RTC Backup Circuit

1. Function This unit has a lithium battery (BAT401) which works for Real Time Clock IC (RTC: inside IC1). The RTC continues to work, backed up by a lithium battery even when the power switch is OFF. The user parameters for autodial numbers, the system setup data and others are in the FLASH MEMORY (IC6).

2. RTC Inside (IC1) Backup Circuit Operation When the power switch is turned ON, power is supplied through Q7 to the RTC (inside IC1). At this time, the voltage at pin 14 of the IC1 is +2.5V. When the power switch is turned OFF, the BAT401 supplies power to RTC through D407 and Q505. The voltage at pin 14 of IC1 is about +2.2V. When the power switch is OFF and the voltage of +3.3V decreases, pin 14 of RTC (IC1) becomes roughly the same voltage as the battery voltage. RTC goes into the backup mode, in which the power consumption is lower.

KX-FP701LA

6.3.8. Supervision Circuit for the Thermal Head Temperature

1. Function The thermistor changes the resistor according to the temperature and uses the thermistor's characteristics. The output of pin 139 of IC1 becomes a low level. Then when it becomes a high level, it triggers point A In point C, according to the voltage output time, the thermal head's temperature is detected. After the thermal head temperature is converted to voltage in B, it is then changed to digital data in the A/D converter inside IC1. The CPU decides the strobe width of the thermal head according to this value. Therefore, this circuit can keep the thermal head at an even temperature in order to stabilize the printing density and prevent the head from being overheated.

REFERENCE:

6.4.3.Thermal Head (P.25)

KX-FP701LA

6.4. Facsimile Section

6.4.1. Image Data Flow During Facsimile Operation

Copy (Fine, Super-Fine, Half Tone)

1. Line information is read by Contact Image Sensor (to be used as the reference white level) via route1, and is input to IC1. Refer to 6.4.2.Block Diagram (P.24)

2. In IC1, the data is adjusted to a suitable level for A/D conversion in the Analogue Signal Processing Section, and via route2 it is input to A/D conversion (8 bit). After finishing A/D conversion, the data is input to the Image Processing Section via route3. Then via route4 and route5, it is stored in RAM as shading data.

3. The draft’s information that is read by CIS is input to IC1 via route1. After it is adjusted to a suitable level for A/D conversion via route2, the draft’s information is converted to A/D (8 bit), and it is input to the Image Processing Section. The other side, the shading data which flows from RAM via route6 and route7, is input to the Image Processing Section. After finishing the draft’s information image processing, white is regarded as "0" and black is regarded as "1". Then via routes4 and 5, they are stored in RAM.

4. The white/black data stored as above via routes6 and8 is input to the P/S converter. The white/black data converted to serial data in the P/S converter is input to the Thermal Head via route9 and is printed out on recording paper.

Note:

Standard: Reads 3.85 times/mm Fine: Reads 7.7 times/mm Super-Fine: Reads 15.4 times/mm

Transmission

1. Same processing as Copy items 1 - 3.

2. The data stored in the RAM of IC1 is output from IC1 via routes6 and 10, and is stored in the system bus. Via route11, it is stored in the communication buffer inside DRAM (IC4).

3. While retrieving data stored in the communication buffer synchronous with the modem, the CPU (inside IC1) inputs the data to the modem along route12, where it is converted to serial analogue data and forwarded over the telephone lines via the NCU Section.

Reception

1. The serial analogue image data is received over the telephone lines and input to the modem via the NCU section, where it is demodulated to parallel digital data. Then the CPU (IC1) stores the data in the communication buffer DRAM (IC4) along route12.

2. The data stored in DRAM (IC4) is decoded by the CPU (IC1) via route12, and is stored in DRAM (IC4) via routes13 and 5.

3. Same processing as Copy item 4.

KX-FP701LA

6.4.2. Block Diagram

6.4.3. Thermal Head

1. Function This unit utilizes the state of the art thermal printer technology. The ink film is chemically processed. The ink film is comprised of two parts: an ink layer and a base film. When the thermalhead contacts this ink film, it emits heat momentarily, and the ink layer is melted and transferred to the paper. If this continues, letters and/or diagrams appear, and the original document is reproduced.

KX-FP701LA

2. Circuit Operation Refer to the block diagram and the timing chart on the following page. There are 9 driver ICs aligned horizontally on the thermal head and each one of these ICs can drive 192 heat emitting registers. This means that one line is at a density of 192×9=1728 dots=(8 dots/mm). White/Black (white=0, black=1) data in one line increments is synchronized at IC1 pin 117 (THCLK), and sent from IC1 pin 116 (THDAT) to the shift register of the ICs. The shift registers of the 9 ICs are connected in series, and upon the shift of dot increment 1728, all the shift registers become filled with data, and a latch pulse is emitted to each IC from IC1 pin 118 (THLAT).With this latch pulse, all the contents of the shift registers are latched to the latch registers. Thereafter, through the addition of strobes from the IC1 pins (103, 104) only black dot locations (=1) among latched data activates the driver, and the current passes to heat the emitting body causing heat emission. Here, the two line strobes, STB1 and STB2, impress at intervals of 9.216 msec, as required for one-line printout. The sequence is shown on the next page. [Moreover, for the strobe width, the thermistor value inside the thermal head is detected according to IC1 pin 4. Depending on that value, the strobe width is recorded in ROM (IC6). Accordingly, the strobe width is determined. When the thermal head is not used, the IC1 (17, THON) becomes low, Q502 turns OFF, Q401 turns OFF, and the +24 V power supply for the thermal head driver is not impressed to protect the IC.

KX-FP701LA

6.4.4. Scanning Block

The scanning 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.

When an original document is inserted and the start button pressed, pin 34 of IC1 goes to a high level and the transistor Q8 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 IC1, and the original image illuminated by the LED array undergoes photoelectric conversion to output an analogue image signal (AIN). The analogue image signal is input to the system ASIC on AIN1 (pin 3 of IC1) and converted into 8-bit data by the A/D converter inside IC1. Then this signal undergoes digital processing in order to obtain a high-quality image.

KX-FP701LA

6.4.5. Stepping Motor Drive Circuit (RX)

1. Function The stepping motor works for reception and copy.

2. Motor During motor driving, pin 124 of ASIC IC1 becomes high level, IC401 10pin becomes low level, and Q401 turns ON. As a result, +24V is supplied to the motor coil. Stepping pulses are output from ASIC IC1 pins, 124, 120~123, causing driver IC401 pins, 16~13 to drive the Motor Coil. The motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation. The timing chart is below.

Stepping Motor Drive Mode

Function Mode Phase Pattern Speed

Copy Fine, Photo 1-2 432 pps (t=1/432)

Super Fine 1-2 216 pps (t=1/216)

FAX Receiving Standard, Fine, Photo 1-2 432 pps (t=1/432)

Super Fine 1-2 216 pps (t=1/216)

Paper Feed ——— 1-2 432 pps (t=1/432)

Stand-by ——— All phases are currently off. None

KX-FP701LA

When the motor suspends while it is in the receive mode (about 70~80 msec), pin 124 of ASIC IC1 becomes a low level and Q401 turns OFF, and instead of +24 V, +6 V is supplied through D401 so that the motor is held in place. When the system is in the standby mode, all of the motor drive transistors turn OFF. Consequently, the motor current stops.

KX-FP701LA

6.4.6. Stepping Motor Drive Circuit (TX)

1. Function The stepping motor works for reception and copy.

2. Motor During motor driving, pin 131 of ASIC IC1 becomes high level, IC401 10pin becomes low level, and Q402 turns ON. As a result, +24V is supplied to the motor coil. Stepping pulses are output from ASIC IC1 pins, 131, 125, 128~130, causing driver IC402 pins, 16~13 to drive the Motor Coil. The motor coil is energized sequentially in 2 phase increments, which causes a 1-step rotation. The timing chart is below.

Stepping Motor Drive Mode

Function Mode Phase Pattern Speed

Copy Fine, Photo 1-2 432 pps (t=1/432)

Super Fine 1-2 216 pps (t=1/216)

FAX Sending Standard 1-2 432 pps (t=1/432)

Fine, Photo 1-2 432 pps (t=1/432)

Super Fine 1-2 216 pps (t=1/216)

Document Feed ——— 1-2 432 pps (t=1/432)

Stand-by ——— All phases are currently off. None

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