Craden DP6 Specifications

Craden dp6: specifications

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1.0 DP6 & DP7 DOCUMENT PRINTERS - FUNCTIONAL SPECIFICATIONS

1.1 PRINT CHARACTERISTICS

Print Method

Print Line Width

Character Spacing

Font

Print Speed

(chars/second)

Dot Graphics

(dots/inch)

Feed Speed

Feed Accuracy

1.2 FORMS CHARACTERISTICS

Media

Document Width

Document Length

Document Thickness

Non-printable Areas

1.3 RIBBON

Cartridge

Impact with automatic thickness compensation

DP6: 9 wire dot matrix

8.0" (203 mm)

5, 6, 8.5, 10, 12, 17, 20 and 24 characters/inch

96 char. ASCII, international character support

DP6

Chars/inch

Draft

165

Normal

125

Correspondence

DP6: 60, 120, 240 horizontal; 72, 144 vertical

DP7: 60,120,180, 360 horizontal; 72, 180 vertical

50 msec. single line feed at 5 or 6 lines/inch

12 inches/second (305 mm/sec) slew speed

+/- 0.6%

Single sheets, passbooks, 6 part multipart forms and

envelopes.

2.5" (64 mm) to 9.5" (241 mm)

2.5" (64 mm) minimum, no maximum

0.0035" (0.09 mm) to 0.062" (1.57 mm)

Top of form

Above horiz. fold

Below horiz. fold

Bottom of form

Vertical fold/edge

Endless loop ribbon with internal reinking

DP6: NEC P2200 compatible

DP7: Panasonic KX-P155 compatible

DP7: 24 wire dot matrix

DP6

DP7

200

150

180

DP6

DP7

0.25"(6.4mm)

0.16"(4.1mm)

0.25"(6.4mm)

0.38"(9.7mm

0.31"(7.9mm)

0.27"(6.9mm)

0.40"(10.2mm)

0.45"(11.4mm)

0.25"(6.4mm)

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Summary of Contents for Craden DP6

Page 1 1.0 DP6 & DP7 DOCUMENT PRINTERS - FUNCTIONAL SPECIFICATIONS 1.1 PRINT CHARACTERISTICS Print Method Print Line Width Character Spacing Font Print Speed (chars/second) Dot Graphics (dots/inch) Feed Speed Feed Accuracy 1.2 FORMS CHARACTERISTICS Media Document Width Document Length Document Thickness Non-printable Areas 1.3 RIBBON...
Page 2: Physical Characteristics
1.4 INTERFACE Standard Serial RS-232, DP6: 1200-9600 baud, 4KB buffer Optional RS-232 dual ports or PC parallel port Command Sets IBM Proprinter/4722, Unisys and Craden Protocols DTR, Xon/Xoff and Block Power Input 100-130 or 200-260 VAC, 50-60 Hz, 50 W max.
Page 3 PERMANENTLY DAMAGE THE PRINTER! 5. Check that the power switch on the printer rear is off ("0" side depressed). Connect the line cord to the printer and then to an electrical outlet. If a suitable line cord was not supplied with the printer, procure an IEC HAR (harmonized) line cord that has an IEC 320-C13 style connector and the appropriate HAR plug for your country.
Page 4 2.3 CHANGING SUPPLY VOLTAGE The printer can be set to operate with either 115 VAC or 230 VAC input. It will operate from 50 or 60 Hz at either setting. The label on the back indicates the current setting. To change the voltage setting: CAUTION: THIS CHANGE MUST BE PERFORMED BY TRAINED SERVICE PERSONNEL 1.
Page 5 3.3 RIBBON CARTRIDGE LOADING/REPLACEMENT The DP6 cartridge (Part# 99059) is compatible with the NEC P2200 cartridge. Its drive knob is on the right side of the cartridge. The DP7 cartridge (Part # 99073) is compatible with the Panasonic KX-P155. Its drive knob is in the center of the cartridge.
Page 6 6. Insure that the ribbon is located between the printhead nose and the ribbon shield and the shield is seated with the notched side toward the rear of the printer. If the ribbon is caught on the front of the printhead nose use a pen point to push it into place.
Page 7: Keypad Operation
3.3.2 DP7 Ribbon Cartridge Loading/Replacement To replace a DP7 ribbon cartridge: 1. If the new cartridge has a plastic ribbon shield attached, remove it. 2. Pull about a 1/2" loop of ribbon from the new cartridge. 3. Remove the lid. If several minutes of continuous printing have just been finished, the printhead and carriage may be hot to the touch.
Page 8: Display Operation
READY EJECT to display messages both from the printer and the host system. There is a contrast knob to the left of the EJECT key that should be adjusted for maximum legibility depending on the display viewing angle. When the printer is turned on, "READY"...
Page 9 See 3.6.5 for automatic alignment parameters that appear on the Printer Parameter menu. NOTE: Most Printer Parameters may be configured by the host system via the HT or other commands. This allows for dynamic reconfiguration on a document by document or line by line basis.
Page 10: Communication Parameters
Select parity bit as EVEN, ODD or NONE. Select 1 or 2 stop bits. Select a SINGLE LINE or a MULTIPLE LINE buffer of 3K (DP6) or 11K (DP7). Select C to enable commands used with previous versions of this printer.
Page 11 Press 9 4 then FUNCT to display the following Service Parameters. These parameters are factory selected specifically for each printer mechanism and recorded on the label next to the display inside the printer. They do not usually need to be modified by the user.
Page 12 RAM TEST BAD may be displayed. If a fault occurs, press  A to advance to the next test. However, the printer should not then be operated. If the problem is not a POWER FAILURE (see 3.10.1), contact your Service Personnel or see 5.6 of the Technical Manual for troubleshooting.
Page 13: Local Printing
Printing will resume 3 seconds after the lid is replaced. 3.10.4 Page Overflow If the printer is commanded to move past the last printable line on a document it will eject the document and display PAGE OVERFLOW INSERT NEXT PAGE. Printing will resume when another document is inserted.
Page 14 3 FUNCT (see 3.6.2) or the interface. Mode C is compatible with previous versions of this printer while Mode I is compatible with popular PC based printers. If Mode I is selected, the DP6 can use a IBM Proprinter driver and the DP7 can use a IBM Proprinter X24 driver.
Page 15 ESC SI stops double height printing. ESC E starts bold, double strike printing in 10 and 12 character/inch NORMAL print speed and reduces print speed by 33% (DP6) or 50% (DP7). ESC F stops bold printing. RS n inserts n blank spaces into the print line and can be used to reduce the number of characters transmitted when large blank spaces are to be printed.
Page 16 3.11.4 Mode C Display Commands immediately displays the following 16 characters on the upper line of the alphanumeric display. The characters must not be control characters and there must be exactly 16 displayable characters. loads the lower display line just like BEL loads the upper line. or ETB operate identically to a BEL command but all previously received print and document movement commands are executed before the upper line of the display is loaded.
Page 17 ENQ only after all previously received commands have been executed. SUB may be used to interrupt the host and notify it that the printer is now idle.
Page 18 3.11.7 Mode C Graphics Commands Dot addressable graphics may be printed at 60 or 120 dots/inch (dpi) horizontally by 72 or 144 dpi vertically. ESC A must precede each line of 60 dpi data with a maximum of 480 data bytes. ESC B must precede each line of 120 dpi data with a maximum of 960 bytes.
Page 19 3.12.1 Mode I Command Summary Mode I recognizes the following ASCII control sequences: ASCII * BS * LF * VT * FF * CR ESC - n 1B 2D n ESC 0 1B 30 ESC 1 1B 31 ESC 2 1B 32 ESC 3 n 1B 33 n...
Page 20 Commands prefixed with a * will not be executed until after an ESC ENQ is received if the BLOCK protocol is used. ESC ENQ's are not required if DTR or XON/XOF protocols are used. 3.12.2 Mode I Document Movement Commands moves the document up one line, with line spacing keypad selected (see 3.6.1) or set by an ESC 0,1,2 or 3 command.
Page 21 3.12.4 Mode I Graphics Commands DP6 dot addressable graphics may be printed at 60, 120 or 240 dots/inch (dpi) horizontally by 72 dpi vertically. ESC K sets 60 dpi, ESC L or ESC Y set 120 dpi and ESC Z sets 240 dpi. ESC Y prints at full speed but consecutive horizontal dots are prohibited.
Page 22: Communications Interface
All commands and characters received except immediate status requests, display and reset commands are placed in a first-in, first-out input buffer of 3K (DP6) or 11K (DP7) bytes. The BA status bit indicates at least 1000 characters of unused buffer are available. Transmission to the printer should be block structured (less than 1000 characters per block) with ENQs issued at the end of each block to check for transmission errors in the preceding block (requiring retransmission) and buffer availability for the next block.
Page 23 Note that regardless which interface is used DSR must be active for the printer to receive commands and CTS must also be active for the printer to transmit status. If no connection is made to these signals, they are biased active in the printer.
Page 24: Parallel Interface Option
3.13.4 Dual Port Option The Dual Port option allows for simultaneous connection to two hosts with each one alternately enabled using either the DTR or XON/XOF protocols. A port is enabled for 0.25 seconds or, if data is received, until no document is present and the buffer is empty.
Page 25: Document Drive Assembly
4.0 THEORY OF OPERATION OVERVIEW The DP6 & DP7 Document Printers handle and print a large variety of documents. The mechanism consists of a printhead, a printhead drive assembly and a document drive assembly. The electronics consist of an AC PCB (printed circuit board), a power transformer, a Main PCB, two sensor assemblies and a keypad/display assembly.
Page 26: Keypad/Display Assembly
6809. In the DP6 the 8 KByte RAM U21 is selected by U11 pin 6 when A15, 14 & 13 are all low. (In the DP7 the 32 Kbyte U25 is selected by U13 pin 16 when A15 is low unless A14 & 13 are both high and any bank select line BNK1 to 3 is low which selects EPROM or unless A14,12 &...
Page 27: Stepper Motor Drivers
In the DP6 the 64 KByte EPROM U22 is selected by U25 pin 10 whenever either A14 or A15 is high, allowing 48 Kbytes of addressable EPROM. (In the DP7 the 64 or 128 KByte EPROM U24 is selected by U13 pin 19 whenever either A15 is high or any bank select BNK1 to 3 is low, allowing 64 or 88 Kbytes of addressable EPROM.) The EPROM contains the dot patterns for all printable characters and all programs that the 6809...
Page 28 Phase current Current current Control Comp. U20 - 15 U20 - 15 U20 - 15 J2 - 1 J2 - 1 J2 - 1 J2 – 3 J2 – 3 J2 – 3 3717 Phase Control Shot 2.7 mSec 2.7 mSec 2.7 mSec FIG 4.1 STEPPER MOTOR DRIVE CIRCUIT +30V...
Page 29: Printhead Drivers
4.2.4 Printhead Drivers During DP6 printing, a pulse at NAND gate U27 pin 3 simultaneously loads 74LS273 latch U6 with 8 bits indicating which printwires are to be driven and triggers print pulse timer U14. Each high bit in U6 applies +30 VDC to one side of the corresponding printwire coil via NPN predrivers U5 and TIP126 or TIP127 PNP drivers Q4 to Q12.
Page 30 DATA N ____ FIRE ______ PINSTB U18 - 10 U14 - 2 U14 - 3 U15 - 3 U17 - 4 U15 - 5 Q9 COL (TAB) Q3 DRAIN (TAB) 74LS273 ULN2003 Timer Timer 100 s 200 s FIG 4.2 PRINTHEAD DRIVE CIRCUIT +30v Q4 –...
Page 31: Character Printing
17 X 17 (25 X 22) for 10 cpi and 13 X 17 (19 X 22) for 12 cpi. DP6 CQ is printed in two passes with the document moved by 1/2 dot between passes to double the vertical resolution.
Page 32 5.1 LUBRICATION AND CLEANING 5.1.1 Lubrication There are no lubrication points in the printer. All parts are either permanently lubricated or are designed to operate dry. No lubricants should be used. They may adversely affect operation. 5.1.2 Document Feed Roller Cleaning 1.
Page 33 5.1.4.1 DP6 Printhead Cleaning 1. Remove the cabinet lid and ribbon cartridge. 2. Remove the 2 screws fastening the printhead to the carriage. 3. Disconnect the printhead from the printhead flex cable. 4. Clean the tip of the printhead nose where the printwires extend from the printhead with an alcohol wetted napkin.
Page 34: Document Print Area Cleaning
The cabinet can be cleaned with a damp cloth and a mild, liquid soap or detergent. Do not use harsh, abrasive cleaners. On the DP7 printer, remove this screw to remove printhead. Removing this screw on the DP6 will irreparably damage the printhead.
Page 35: Service Parameter Set-Up Procedure
92 FUNCT for BEGIN PRINTING AFTER ENTER KEY. Insert a document and then move it slightly into the printer with the  A key. Draw a line across the document directly beneath the front edge of the metal input guide above the document. Press ENTER and the document will be repositioned. Set the INDEX OFFSET so that the first line printed by 95 FUNCT is centered on the line drawn across the document.
Page 36: Mechanical Adjustments
5.4 MECHANICAL ADJUSTMENTS 5.4.1 DP6 Printhead Gap Too large a gap causes light print and missing dots. Too small a gap causes ribbon smear. 1. Remove the cabinet lid and ribbon cartridge (See 5.5.1). 2. Turn off power. 3. Flex the plastic ribbon shield and remove it from its holder.
Page 37 6. On units with serial numbers below 70091 the gap must be adjusted by repositioning the gap plate as described for the DP6 in 5.4.1 steps 5 & 6 but with a .013” gap. Then skip to step 12 below.
Page 38: Carriage Drive Belt Tension
Push the wheel guide against the guide wheel and insure that the wheel guide arms are horizontal. Tighten the 2 wheel guide screws. 4. Move the carriage to its rightmost position and repeat step 3. 5. Adjust the envelope ramp on DP6’s below S/N 00588 (see 5.4.6).
Page 39 5.4.7 Envelope Ramp (DP6 below S/N 00588) 1. Move the carriage toward the right so that the printhead nose is still above the black platen but the flat top surface of the white plastic ramp is beneath the carriage flange.
Page 40 Ramp adjustment screw Move ramp this way to lower gate View: Gate arm from front of printer with tray support removed Roller Spring Mounting Screw View: Right side of DP7 w/automatic alignment with cabinet removed. 5.4.13 Auto Alignment Roller Spring Tension 1.
Page 41: Auto Alignment Skew Sensor Calibration
4. Repeat steps 2 and 3 for the leftmost roller segment and the roller spring tensioning screw on the left side plate. 5.4.14 Auto Alignment Gate Travel Roller Shaft Input Guide gate by pressing 9 4 7 FUNCT  A. 2.
Page 42 1. Remove the ribbon shield by raising the carriage, pushing down on the shield until it snaps free from the carriage and sliding it out to the right. 2. Move the carriage to the position on the right side of the printer where the carriage is lifted to its highest point by the lift button.
Page 43: Replacement Procedures
5.5.5 AC board 1. Turn off power and unplug the AC Cord. 2. Facing the rear of the printer remove the screw on the right end of the AC cord receptacle and the screw to the left of the power switch.
Page 44: Carriage Home Sensor
5.5.6 Carriage Home Sensor 1. Remove the cabinet (see 5.5.1). 2. Remove the 2 screws in the PCB upper corners or, if the PCB has button fasteners, pry each upper corner free and fold the PCB down. 3. Disconnect the Carriage Home Sensor cable from J5 of the Main PCB. 4.
Page 45: Carriage Drive Belt
8. To install a new transformer reverse the procedure in steps 1 to 6. Route the transformer wires under the carriage motor so the main PCB input power connector does not pull off. 5.5.9.1 DP6 Printhead 1. Remove the cabinet lid and ribbon cartridge.
Page 46: Carriage Motor
6. Assemble the 4 screws to the new motor. The DP6 uses a second flat washer on the upper screw closest to the transformer. The DP7 uses shorter screws on the side closer to the transformer. Carefully install the motor in the box and fasten but do not tighten the screws.
Page 47 2. Remove the cabinet (see 5.5.1). Move the carriage to the center. If working with a DP7, remove the home sensor from the left pivot arm. If working with a DP7 or if there are 2 ribbon cable springs on the DP6 left pivot arm, remove the old cable and upper spring and skip to Step 7.
Page 48: Basic Troubleshooting Procedure
7. 48 VAC is present between J1 pins 1 and 3. If not, check transformer wiring (see 2.2). 8. At least 4.3 and less than 4.7 Volts is present across R14(DP6) or R61(DP7). If not, problem is in switching power supply or power OK circuitry.
Page 49 Carriage drives into the left side of the printer. Carriage drives into the right side of the printer. Back document sensor DP6 all & DP7 without automatic alignment Back document sensor DP7 with automatic alignment Condition Front document sensor light path is blocked by paper, dust, a bent input tray or guide.
Page 50: No Document Motion
3. Remove the sensor connector cover and check that the respective sensor wires are seated in their individual connector slots. 4. Replace the sensor (see 5.5.6 or 5.5.7) or U7 (DP6) or U8 (DP7) on the main PCB. 5.6.5 No Document Motion If a document will not advance upon insertion: 1.
Page 51: Print Quality
1. Check that document is not too thick or printing is too close to a fold or edge (see 1.2) 2. Check for a displaced or missing ribbon shield. 3. Check printhead gap (see 5.4.1). Condition DP6 ribbon shield installed backward. Printhead or printing circuit is defective (unusual).
Page 52: Missing Dots
If it is OK, replace the flex cable. If it is not, replace the printhead. 2. Repair or replace the main PCB with bad driver circuit (TIP 126 (DP6) or IRFU110 (DP7) is the most likely failure point).
Page 53: Recommended Service Tools
3/16", 5/16" and 11/32" Open End Wrenches .050”, 1/16” and 5/64” Allen Wrenches .010” to .018” feeler gauges and a 1 lb. Or 500 gm. Spring Gauge 6” scale calibrates in 1/100” ¼” nut driver DP6 PART# DP7 PART# 53013 SAME 68038...
Page 54 6.0 MAJOR ASSEMBLY PARTS LISTS 72080-1 DP6 MAIN PCB ASSY ITEM PART# DESCRIPTION 21000 IC 74LS00 21002 IC 74LS02 21004 IC 74LS04 21032 IC 74LS32 21161 IC 74LS161 21245 IC 74LS245 21273 IC 74LS273 21365 IC 74LS365 21367 IC 74LS367...
Page 55 47473 CAP 470uf 10V LO ESR 72080-1 DP6 MAIN PCB ASSY ITEM PART# 48332 CAP 3300uF 50V 50001 DIODE 1N914R 50007 DIODE 1N4002 50017 DIODE 1N5401 50021 DIODE 1N5822 50022 DIODE 1N966A/B 50023 DIODE FR252 51008 TRANS 2N5400/2N2907 51013 TRANS TIP126/127...
Page 56 4-40 X 7/8" PHMS 67193 S CAP 72082-1 DP6&7 KEYPAD ASSY ITEM PART# 70082 KEYBOARD PCB 72084-1 KEYPAD CABLE ASSY 72081-1 DP6&7 AC PCB ASSY ITEM PART# DESCRIPTION 42473 CAP 0.0047uF 250V 20% 44222 CAP 0.22uF 250V 20% 60105 AC SOCKET RECEPT. 62053...
Page 57 30221 RES 1/4W 5% 220 OHM 30222 RES 1/4W 5% 2.2K OHM 30274 RES 1/4W 5% 270K OHM 30332 RES 1/4W 5% 3.3K OHM 30470 RES 1/4W 5% 4.7 OHM 72115-1 DP7 MAIN PCB ASSY ITEM PART# DESCRIPTION 30472 RES 1/4W 5% 4.7K OHM 30563 RES 1/4W 5% 56K OHM 31023...
Page 58 BELT ADJUSTOR (1ST 200 ONLY) 71505 PRINTHEAD MOUNTING SPACER 71707 DP7 RIBBON SHIELD 72080-1 DP6 MAIN PCB ASSY 72081-1 AC PCB ASSY 72088-1 DP6 PRINTHEAD CABLE ASSY 72115-1 DP7 MAIN PCB ASSY 72117-1 DP7 PRINTHEAD CABLE ASSY 73255-1 DP6 CARRIAGE DRIVE ASSY...
Page 59 73258-2 DUAL MALE I/O ASSY 73258-3 SINGLE FEMALE I/O ASSY 73258-4 DUAL FEMALE I/O ASSY 73258-5 DUAL 9 PIN MALE I/O ASSY 72103-1 DP6 PARALLEL I/O ASSY 72120-1 DP7 PARALLEL I/O ASSY 73279-1 BELT CLAMP ASSY 73280-1 DP6 PRINTHEAD ASSY...
Page 60: Auto Align
73257-1,-7 DP6&7 DOCUMENT DRIVE ASSY 73257-1 ITEM PART# 65044 STANDOFF .25 X #6 X .56 65060 STANDOFF .25 X #6 X .31 65063 SPACER .25 X .12 X .75 67022 PUSHNUT 67070 TRAY BUSHING 65073 STANDOFF .25HEX X #4 X .75...
Page 61 67249 PULLEY 36T080P 67285 PULLEY 21T080P 67354 VINYL STRIP 71413 WHEEL GUIDE 71714 71491 RAMP (1ST 740 DP6 ONLY) 72094-7 TRANSFORMER ASSY 73266-1 MOTOR ASSY 73261-1 DP6&7 EXIT CHUTE ASSY ITEM PART# DESCRIPTION 67271 UHMW TAPE 1.25 X 10 71405...
Page 62 PART# DESCRIPTION 67212 WASHER .31 X .13 X .01 NY 67322 WASHER STAINLESS .020T 73273-1 RIBBON CLUTCH ASSY 73275-1 DP6 RIBBON DRIVE SHAFT ASSY 73275-7 DP7 RIBBON DRIVE SHAFT ASSY 73270-1,-3 DP6&7 CARRIAGE PLATE ASSY 73270-1 ITEM PART# DESCRIPTION 67018 SPIROL PIN .06 X .19...

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