Provides a general product overview, lists specifications, and illustrates the main components of the printer.
CHAPTER 2. OPERATING PRINCIPLES
Describes the theory of printer operation.
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
Includes a step-by-step guide for product disassembly and assembly.

CHAPTER 4. ADJUSTMENT

Includes a step-by-step guide for adjustment.
CHAPTER 5. TROUBLESHOOTING
Provides Epson-approved techniques for adjustment.

CHAPTER 6. MAINTENANCE

Describes preventive maintenance techniques and lists lubricants and adhesives required to service the equipment.

APPENDIX

Describes connector pin assignments, circuit diagrams, circuit board component layout and exploded diagram.
The contents of this manual are subject to change without notice.

REVISION SHEET

Revision Rev. A REV.B Issue Date June 1,1994 November 22,1994 Revision Page 1st issue 2nd issue

TABLE OF CONTENTS

CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6. APPENDIX
PRODUCT DESCRIPTION OPERATING PRINCIPLES DISASSEMBLY AND ASSEMBLY ADJUSTMENT TROUBLESHOOTING MAINTENANCE
CHAPTER 1 Product Description

Table of Contents

1.1 FEATURES 1-1
1-2 1.2 SPECIFICATIONS 1.2.1 Hardware Specifications. 1-2 1.2.1.1 Paper Handling Specifications. 1-2 1.2.1.2 Paper Specifications. 1-3 1.2.1.3 Ribbon Catiridge Specifications. 1-5 1.2.1.4 Electrical Specifications. 1-6 1.2.1.5 Environmental Conditions. 1-6 1.2.1.6 Reliability. 1-6 1.2.1.7 Safety Approvals. 1-6 1.2.1.8 Physical Specifications. 1-6 1.2.2 Firmware Specifications. 1-7 1.3 INTERFACE OVERVIEW 1.3.1 Parallel Interface Specifications. 1.3.2 Serial Interface Specifications. 1.3.3 Optional Interface. 1.3.4 Interface Selection. 1.3.5 Prevention Host from Data TransferTimeout.

l-lo 1-12 1-14 1-14 1-14

1-15 1.4 OPERATING INSTRUCTIONS 1.4.1 Control Panel Operation. 1-15 1.4.2 Printer Stateand LCD/LED Indication. 1-17 1.4.3 Self-test. 1-18 1.4.4 Hexadecimal Dump Function. 1-18 1.4.5 Setting Print. 1-18 1.4.6 SelecType Function. 1-19 1.4.6.1 SelecType Phase Transitions. 1-19 1.4.6.2 SelecTypel and20perations. 1-19 1.4.6.3 Font and Pitch Selection Operations. 1-20 1.4.7 Program Reload Mode. 1-20 1.4.7.1 Reprogramming Operation. 1-20 1.4.7.2 Bootstrap. 1-20 1.4.8 PrinterStatus and Buzzer. 1-21 1.4.9 Printer Initialization. 1-21 1.4.9.1 Power-on Initialization. 1-21 1.4.9.2 Hardware Initialization. 1-21 1.4.9.3 Software Initialization. 1-21 1.4.9.4 SelecType initialization. 1-21 1.4.10 Default Settings. 1-22 1.5 MAIN COMPONENTS 1.5.1 BOARD ASSY., C124 MAIN. 1.5.2 BOARD ASSY., C124 PSB/PSE. 1.5.3 Printer Mechanism. 1.5.4 Housing Assembly. 1-23 1-24 1-24 1-25 1-25

3mm [0.12] min. 3mm 10.12 ]min.

Printable area:

34Smm [13.6] max.

Printable Area ,

4.2mm [ 0. ] /

4.2mm [ 0. ] <

)(YZ -1
Figure 1-3. Printable Area for Cut Sheet
101.6 mm -254 mm [4 - 10] max. 345mm [13.6] max. w 9mm [0.35] min. o 0 T-K?

Printable

4.2mm [0,17] min. 4.2mm [0.17] min. o 0 -o 0 o o 0

\ 9mm [0.35] min. o 0 0

-- ---------------

0 - - -0

Printable area
Figure 1-4. Printable Area for Continuous Paper
1.2.1.3 Ribbon Cartridge Specifications
q Ribbon cartridge (black): No. S015066 - Life: - Cartridge weight:
6 million characters at 48 dots/1 character 117 g (0.26 lb.)
- Cartridge dimensions: 153 mm (W) x 105 mm (D) x 33 mm (H) (6.0 in. x 4.1 in. x 1.3 in.)
Ribbon cartridges are not reusab/e.
q Ribbon cartridge (color): No. S015067 - Life: Black: Cyan: Magenta: Yellow: 1.4 million 1.0 million 1.0 million 0.7 million characters characters characters characters at at at at dots/character dots/character dots/character dots/character
- Cartridge dimensions: 153 mm (W) x 105 mm (D) x 33 mm (H) (6.0 in. x 4.1 in. x 1.3 in.) - Cartridge weight:

117 g (0.26 lb.)

q Film ribbon cartridge (black): No. S015068 - Life: - Cartridge weight:. 0.1 million 10 cpi characters at LQ mode 109 g (0.24 lb.) ,,. - Cartridge dimensions: 153 mm (W) x 119 mm (D) x 33 mm (H) (6.0 in. x 4.7 in. x 1.3 in.)
Product Description 1.2.1.4 Electrical Specifications
Table 1-8. Electrical Specifications
Description I Rated voltage Input voltage range Rated frequency range Input frequency range Rated current Power consumption Dielectric strength 7A 120 V Version 230 V Version I 220-240 VAC 198-264 VAC 50- 60 t-fz 49.5- 60.5 tiz 4A

120 VAC 103.5-132 VAC

Approx. 105W (self-test in 10 cpi draft) 1000 VAC rms for 1 minute or 1500 VAC rms for 1 minute 1200 VAC rms for 1 second (between AC line and chassis, 500 VDC) (between AC line and chassis)
1.2.1.5 Environmental Conditions
Operating - Temperature: - Humidity: 5to35C (41 to 95 F) 10 to SOY. RH without condensation
Operating (using the optional film ribbon) - Temperature: 15to35C (59 to 95 F) - Humidity: 10 to 80Y0 RH without condensation Operating (during printing of envelopes or labels) - Temperature: 15to25C (59 to 77 F) - Humidity: 20 to 60% RH without condensation Storage - Temperature: - Humidity: -20 to60C (-4 to 140 F) 5 to 85% RH without condensation

-STORBE

500 ns (min.)
500 ns (min.) 1500 ns (min.) O (min.)

500 ns -10 PS

Figure 1-5. Data Transmission Timing
Note: Transition time (rise time and fall time) of every input signal must be less than 200 ns and every output signal must be less than 120ns.
The BUSY signal is at a HIGH level before either -ERROR signal is at a LOW level or the PE signal is at a HIGH level until all these signals return to their inactive state. The BUSY signal is at a HIGH level in the following cases: During data reception (see the figure above) When the @t buffer is full When the INIT input signal is active During initialization When the ERROR signal is active In the self-test mode In the SelecType When the parallel interface is not selected. The ERROR signal is at a LOW level when the printer is in one of the following conditions: Printer hardware error (fatal error) A paper-out error Release lever operation error PE signal is at a HIGH level during paper out error.
Table 1-11 shows the connector pin assignments and signal functions for the 8-bit paralIel interface.
Table 1-11. Signal and Connector Pin Assignments for Parallel Interface

Pin No. Signal Name

::;% 19
Description Strobe pulse. Input data is latched at the falling edge of this signal. Parallel input data to the printer. Active-HIGH input. DATA1 LSB: MSB: DATA8 Indicates that data has been received and the printer is ready to accept more data. A HIGH level means the printer cannot accept further data. A HIGH level means a paper-out error. Always the logical opposite of the ERROR signal. Always at a HIGH level (pulled up to +5 V through a 1 K-ohm resistor). Auto feed execution means that a line feed is automatically performed upon input of a CR code. Checked when the printer is initialized. Active-LOW signal. Initialize printer. Minimum 50 US pulse is necessary. Active-LOW signal. A LOW level means that an error has occurred. Not used. Pulled up to +5V and shorted to +5V via Schottky diode, making these signals appear low to the host when the printer is turned off. Chassis GND Signal GND Not used. Not connected.

STROBE

DATA1 -8

In out out

ACKNLG BUSY

36 18,?:-30 15,34

INIT ERROR

In out

Logic H Chassis GND GND NC -
/n/Out refers to the direction of signa/ flow as viewed from the printer.
1.3.2 Serial Interface Specifications
Data format: Synchronization: Handshaking RS-232C serial Asynchronous By DTR (REV) signal or X-ON/OFF protocol
Table 1-12. Serial Interface Handshaking

DTR Signal

X-ONM-OFF Protocol
Description When the number of bytes remaining in the input buffer reaches 256 or less, the signal level goes to MARK and X-OFF code is sent to the host computer. This indicates that the printer is not ready to receive data. When the number of bytes remaining in the input buffer reaches 512 or less, the signal level goes to SPACE and X-ON code is sent to the host computer. This indicates that the printer is ready to receive data.

X-OFF (DC3/13H)

X-ON (DC1/1 IH)

DTR (REV) Signal

S P A C E;

(+12V) f-~<

& I
512 byte 256, byte X-ON X-OFF

8K byte

() Input Buffer Vacant Area

X-ON/X-OFF Protocol

Figure 1-6. Handshaking for RS-232C Interface
Word length Start bit: Data bit: Parity bit: Stop bit: Bit rate: Logic level: Error handling: Connector: 1 bit 8 bits Odd, Even, or None 1 bit or more 300, 6(X), 1200, 24(XI, 4800,9600,19,200 bps EIA-232D MARK (logical 1): -3V to -25V SPACE (logical 1): +3V to +25V When parity error is detected, the received byte is changed to the * character cede. Overrun error and framing error are ignored. 25 pin subminiature D-shell comector (female) or equivalent
Product Description See Figure 1-7.
Data transmission timing:

- - - - - -

DTR (-v) (+V) RXD (-v)

Stari Bit Parly BiI

DTR Handshaking

:[12:13[4[5161i

~da Bt.
Start Bt Parity Bit Start Data Bit Bt ( X - O F F ) Start Data Bii Bit (X-ON)

(-v) (+V)

TXD (-v)

X-ONX-OFF Protocol

Figure 1-7. Serial Data Transmission Timing
Notes: The value of T varies according to the input data. The word structure of serial data is 1 start bit + 8 data bits + parity (Odd, Even, or none) + 1 orrnore stop bits. Table 1-13 shows the connector pin assignments and signal functions for the RS-232C serial interface.
Table 1-13. Signal and Connector Pin Assignments for Serial Interface

Signal Name UO

Description Transmit data. Connected directly to the DTR signal. Receive data. Signal ground level. Chassis GND. Not used. Not connected.
I TXD I DTR REV RXD CHASSIS GND NC

out In -

] Out I Indicates that the winterisreadvto receive data or not.

I SIGNAL GND I -

Other Note:
/n/Out refers to the direction of signa/ f/ow as viewed from the printer.

1.3.3 Optional Interface

Type-B and Type level 2 optional interfaces are available except for C82305 and C82306 serial interface.

Rectifier DB101

EMI Filter Surge Cut TYI 01

Regurater IC151

Main + Switching Circuit
Half-wave Rectifier Smoothina tPclol t CONSTANT VOLTAGE

+35VDC. (CH. B)

[PC102 t [PC201 ~ Main Switching Circuit Half-wave Rectifier Smoothing

CIRCUIT

+35VDC. (CH. A )
Figure 2-9. Power Circuit Block Diagram

2.3 CONTROL CIRCUIT

Figure 2-10 gives the control circuit block diagram for the DLQ-3000. The BOARD ASSY., C124 MAIN is located at the center. The printer uses a 16-bit internal 8-bit external l-chip CPU p.PD70433/V55PI (IC1O) as the main CPU, with a clock frequency of 24.8832 MHz (CR1). The control program is stored in a IMbit Flash EEPROM Intel 28FO1O(IC13). The CPU starts the program after an external reset signal is received. The program can be reloaded by PC. For memory, two D-RAMs are used for external PSRAM. A non-volatile memory (EEPROM 93LC46) is used to store the TEAR OFF position, operators control panel setting, reload controlling parameter for the Flash-EEPROM, adjustment parameters and so on. Further more, gate arrays E05A88 (IC1l) are used for assigning the clock control, address control, memory management, DRAM control, I/F control, Type-B I/F control, port control, RF motor control, bit manipulation, head control. Gate array E05A89 is used for controlling the panel interface functions. Both are employed to simplify the circuit, and operate under the control of the Cl?u. The printer has a IEEE-1284 parallel interface Level 1 device hardware that will provide bidirectional interface in the future.

GATE ARRAY E05A89

pPD70433

GATE ARRAY E05A88

DRIVER

PF DRIVER

EEPROM ~ +35V (CH.A) ~ +35V (CH.B) w +5V
Figure 2-10. Control Circuit Block Diagram
The functions of the main ICS are as follows. s Main CPU I.LPD70433/V55PI (IC1O) This is the main CPU, which receives data from the host computer directly (parallel) or via the gate array E05A88 (serial) and store the data in the D-RAM input buffer. Then, when a print start interrupt occurs (CR code, or buffer full), it transfers the input buffer data to the CG (character generator) and converts the data into image data. The four printing modes of the printer correspond to the four different drive conditions, and in each the energizing pulse width is modified (i.e. lengthens or shortens the time) based on the information from the sensors (voltage, PG, and head temperature). The main CPU has parallel I/F and the input buffer control hardware. The main CPU directly controls the reception from each mechanism sensor, platen feed motor, carriage motor and control panel. The built-in 8-channel 8-bit A/D converter is used for the V source voltage check and head temperature detection. For abnormal voltage drops on the +V, an interrupt port is used to execute a physical interrupt (error detection). s Gate Array E05A88 (IC1l) This is a l-chip gate array which handles the following functions. - Clock Control Unit (CCU) : - Address Latch (ALU): - AB20 Control Unit (AXU) - Memory Management Unit (MMU): - DRAM Control Unit (DCU) - I/F Control Unit (IFU): - Type-B I/F Control Unit (TIB): - Port Control Unit (PCU): - RF Motor Control Unit (MCU) - Bit Manipulation Unit (BMU): - Head Control Uni (HCU) - Head Control Unit 2 (HCU2) - Read Data Unit (RDU): s Gate Array E05A89 s Inter 28FO10 (lMbit Flash-EEPROM, IC13) The memory is the CPU program ROM which contains the firmware that controls the mechanisms, Character Code Table, Panel message and all of the control programs for the main printer. The program can be reloaded from an external PC. 9 8Mbit Mask Rom (CG ROM-1: Character Generator-1, IC12) A mask ROM which contains printing pattern, Character code table, multi-font character generation, panel message and Boot-strap program is provided as standard equipment. s HM514256A/AL (1-Kbyte D-RAM, IC19,20) This RAM is used as the CPU working area. Internally, it is mapped as the print data expansion area for the data input buffer, line buffer, image buffer, etc. s 93LC46 (EEPROM, IC16) This EEPROM stores and protects the hardware settings for the bi-directional adjustment value, and data for SELEC1lPE settings, TOF positions, TEAR OFF amount, etc. When power is off, these data are protected by interrupt program. If the combination of main board and mechanisms changes, the settings must be rewritten by the program. (Refer to Section 4.5) Outputs clock pulse Latches and outputs the lower address. PROG select, CGROM select, QPIT select, MMIO1 select, etc. Output of BUSY, ERR, PE, SLCT and SL245 signals Option I/F select CR current, PF current, LOD / PEW sensor read enable and VPPENB signal control Double-Height rendition manipulation, etc.

Outputs internal MMIO data
This is a l-chip gate array used for controlling the control panel interface.

2.3.1 Interface Circuit

Figure 2-11 is a block diagram of this circuit. This section describes the data set interface for the paralIel and serial interfaces of the DLQ-3000. s Parallel Interface: This printer has a IEEE-1284 parallel interface level 1 device hardware that will provide bidirectional interface in the future. The CPU (V55PI) has parallel I/F and input buffer control hardware. Gate array E05A88 latches data from the host computer (with a STRB signal), and automatically transmits a BUSY signal. At this time, the CPU reads the hardware/software BUSY signal by reading a MMIO. The CPU then stores the data in an input buffer. After the data is stored, the E05A88 transmits a BUSY signal clear and the CPU transmits an ACK signal to the host computer. s Serial Interface: Received data RXD from the host computer (i.e. RECEIVE DATA, this is also applied to an optional serial interface) will be transformed for the level (TIL), and be received by an synchronous serial communication interface of the CPU. The data is transmitted to an input buffer from the CPU. The CPU directly outputs transmit data TXD (TRANSMIT DATA). For DC1/DC3 protocols, a DC3 code is output when the buffer is full. (After the buffer is restored, a DC1 code is output.) A REV signal (same as DTR: DATA TERMINAL READY) is output at the CPU port P36, and controls the DTR. Printing starts when a CR code is received or when the input buffer is fulL Data stored in the input buffer is stored in a line edit buffer. Image data (to access CG) referenced by each of the line edit buffer parameters is buffered into an image buffer. This buffered image data is transmitted to gate array E05A88 in 8 bit units creating print data. When the host computer outputs an initialize signal INIT, the P16 port of the CPU is initialized w i t h a n INTP5. PARALELL i/F

)ATASTB ACK ITP5

INIT ;

PARALEiL DATA (DO-7) !

PIF-ERR PIF-PE PE ; BUSY : PIF-BUSY AFXT ; AFXT SLIN ;~ SLIN SLCT ; PIF-SLCT ERR ;

i--l--E05A88

DATA BAS i REV

DTR RXT TXD ;

SERIAL VF
Figure 2-11. Interface Circuit Block Diagram

Operating Principle

2.3.2 Reset Circuit
Figure 2-12 is a block diagram of the reset circuit. IC PST523DTM (IC 14) is a power on reset IC which generates a reset signal when the power source voltage becomes unstable due to power on/off switching. The circuit detects the +5V line leading edge with IC 14. The threshold voltage is set atapprox. 4.2 VDC. The printer is in the system reset condition. A reset signal is input into gate array E05A88 and CPU, then supplied to each of the devices to reset them. TYPE-B l/F /RST +5V o ~ R120

PST593DMT (IC14)

Vcc GND

CPU 8 /RESVTOL

GA 88 /RSTIN
Figure 2-12. Reset Circuit Diagram 2.3.3 Memory Back-up Circuit
Figure 2-13 is a block diagram of this circuit. When the power is turned off, mainly the following data will be backed up to EEPROM (IC16). q TOF, TEAR OFF FUNCTION, character fonts, panel configuration q USER DEFINED CHARACTER q Set values for mechanism control (for state control of all the sensors). Adjusted values for mechanism control (e.g. Bid Adjustment). Boot strap program flag (for loading program of the Flash EEPROM) Data to be backed up is written by the CPU, i.e. by setting the NMI port to Low. The back-up monitor circuit shown in Figure 2-14 is in the A/D converter of the CPU. The +35 VDC line drops to 27 VDC or less when the power is turned off. The CPU generates a chip select signal (at P21) for the EEPROM and writes back-up data into the EEPROM. The back-up data can be stored in this way, before the power source voltage drops completely.

93LC49(IC16)

SVPA(+35V) P60 SVPB(+35V) P61

>A- A Reading

Figure 2-13. Memory Back-up Circuit Block Diagram
2.3.4 A/D Converter Detection Circuit
Figure 2-14 is a block diagram of the circuit. The CPU contains a built-in 8-bit A/D converter. All detection terminals are used to detect transit analog signals.
Table 2-19. A/D Converter Signal Assignment

Port Signal Name

Purpose Monitors +35VDC (VPA) Monitors +35VDC (VPA) Monitors head coil temperature to detect overheat (1 OOOC or higher) and over cool (less than 12C). Detects the paper width left /right signal and paper end signal.
Operation respondent to what IS detected If the voltage drops below approx. +24V If the voltage drops below approx. +24V If the head coils are overheated or over-cooled ?(, The printable area is set.

AN lO ANI1

SVPA SVPB
+35 V(SVPA) +35 V(SVPB) HD-TH AN lO

D AN12 P23-25

HEAD COIL TEMP. HP. Control (via GA) (via GA)

q pHpwA/B,

PAPER WIDTH

SENSOR,,,

- AN13
Figure 2-14. A/D Converter Detection Circuit
2.3.5 Detector Circuit for General Ports
Figure 2-15 is a block diagram of detection signal assignment for general ports. All completely of the sensor signals of the mechanism are assigned to each of the general ports of the CPU as follows.
Table 2-20. Signal Assignment of Detector Circuit for General Ports
Port P03 P04 P05 P06 P07 Signal Name CO-R FI-R CSHOME PGSW RLSW Purpose Detects a color ribbon sensor signal Detects a film ribbon sensor Detects a color select (ribbon shift) home position signal Detects a signal platen gap sensor signal Detects a release lever position sensor Operation res ondentto what IS de racted Print speed control Print speed control Ribbon shift control Copy mode control

signal Detects a cover open sensor signal Detects a carriage home position sensor signal Detects a loading sensor signal
Paper handling control Cover open warning Carriage position control, carriage error warning Paper feed control (for checking paper supply/eject and paper jam, and paper feed error warning)

PI 1 P33

CRHOME

PEW/LO

PRINTER MECHANISM

COLOR RIBBON SENSOR

FILM RIBBON SENSOR I CS HOME SENSOR PLATEN GAP SENSOR RELEASE LEVER SENSOR I COVER OPEN SENSOR ICR HOME SENSOR ~ LOADING SENSOR I

lHp04 > P05 I

~ P07 PI 1 > P33
Figure 2-15. Detection Signal Assignment for General Ports
2.3.6 CS/RF Motor Controller/Driver Circuit
Figure 2-16 shows a block diagram of the color shift and ribbon feed (cS/RF) motor driver arcuit. The CS/RF motor is a PM (permanent magnet) stepping motor, and is driven with 1-1 or 2-2 phase excitation in proportion to the desired rotational speed. This motor can be rotated in both directions and stopped at any position. Four phase signals (RFA to RF-B) are output from the gate array (IC1l), and pass through a driver transistor array (QM7). A common voltage switching signal (RF-R/H: hold/run switching) is output from the CPU (at P20). The drive voltage is constant (i.e. 35VDC from the VPB line). Table 2-21 gives the CS/RF motor current consumption.
Table 2-21. CS/RF Motor Current Consumption
Source Voltage Current Consumption (1/ Motor) I 35VDC *1O% Ribbon Feed : fabric ribbon film ribbon color select less than 350 mA less than 350 mA less than 550 mA
Table 2-22. Motor Drive Frequency Settings and Conditions
Mode Condition (Note) Drive Frequency Exci~xcig~n

Ribbon Feed

4 times, 3 times, twice, 3/2 times or 4/3 times as fast as the default The default or 3/4 times as fast as the default 1/2 as fast as the default
770 pps 640 pps 320 PPS 460 PPS 660 pps

2-2 phase 2-2 phase

1-1 phase

Color Select

Copy mode Normal mode
Note: Carriage speed or Print mode

TR. ARRAY

GA(IC11)
RF A RF-A RF B RF-B w w w m

MP5302(QM7)

BEp cl C2 C3 C4 +5V O RFA 0 RF-A 0 RF B Q RF-B

vpB(+35v) ~

CPU(IC1O)

Q8 P20 BP CP

0 RFCOM
Figure 2-16. CS/RF Motor Driver Circuit Block Diagram
2.3.7 Paper Feed Motor Controller/Driver Circuit
Figure 2-17 shows a block diagram of the paper feed motor controller/dnver circuit. The paper feed motor is a hybrid type stepping motor, and is driven with 2-2 phase excitation. This motor can be rotated in both directions and stopped at any position. Four phase signals (PFA to PFD) are output from the CPU and driven by PF motor drive IC2. The common voltage is constant (35 VDC from the VPB (+35V) line). Table 2-23 gives the circuit specifications. Table 2-24 gives the motor drive frequency settings.

CBB(M4X16)

CBB(M4X16) \

FRAME ASSY.,BOITOM

Figure 3-32. Removing the HOUSING ASSY.,LOWER

DLQ-3000 !%rVice hkWIUd

Oiaasmbfy and Assembly
This section describes the procedure used to reload the printer control software to the 128 K byte Flash-EEPROM. Using this program reload mode , the printer control software can be changed completely. After replacing the BOARD ASSY.JMAIN, reload the printer control software. This mode is for use in DOS or DOS/V only. These ties whid is used to reload the Pfiter ~ntrol software consists of the IPL( Initial Program Loader) Z40BXXXX.HEX ( xxx means Ver. No. ) and the main program files. The procedure is as follows: Step 1: Step 2: Step 3: Comect the ParalleH/F cable to the printer. Change the current drive path of the PC to the drive path of the IPL file and main program is installed. Turn on the printer on while the TEAR-OFF, LF/FF, LOAD/EJECT and PAUSE buttons are depressed. Then the printer LCD displays Program Mode, and enters the program reload mode. Translate these files by COPY command function as follow. > COPY Z40BXXXX.HEX PRN > copy Control software file PRN Then the PC starts to transfer the printer control software to the printer. When the printer LCD displays Check Sum XXXX, turn off the printer. Then the reload mode is ended. (XXXX depend on the main program file.)

Step 5:

CHAPTER 4 Adjustment
4.1 OVERVIEW 4.2 PLATEN GAP ADJUSTMENT 4.3 BELT TENSION ADJUSTMENT 4-1 4-2 4-4
4.4 DEFAULT, MACHINE INFORMATION SEITING AND BI-DIRECTIONAL 4-5 ADJUSTMENT 4.4.1 Default and Machine Information Setting. 4-5 4.4.2 Bi-directional Adjustment. 4-7 4.5 SENSOR ASSY., LOAD Adjustment 4-8
Figure 4-1. Figure 4-2. Figure 4-3. Figure 4-4. Figure 4-5. Figure 4-6. Figure 4-7 Parallelism Adjustment. Platen Gap. Looseningthe Nut. Platen GapAdjustment. BELT TENSION Adjustment. Bi-D Pattern Printing. SENSOR ASSY.,LOAD Adjustment. 4-2 4-2 4-3 4-3 4-4 4-7 4-8
Table 4-1. Adjustment Items. 4-1 Table 4-2. Platen Gap Adjustment Value. 4-4 Table 4-3. Default Setting. 4-6

Adjustment

4.1 OVERVIEW
The following sections describe the adjustments required when reassembling the DLQ3000. After any part concerned is disassembled or replaced for maintenance/repair, be sure to adjust the printer to guarantee correct operation.
Table 4-1. Adjustment Items
Disassembly/Assembly Adjustment

Id--a- cd--d

4%> x
Figure 4-4. Platen Gap Adjustment
Table 4-2. Platen Gap Adjustment Value
Adjustment Value Reference Value Step 10: Step 11: Step 12: Step 13: Step 14: 0.37 I 0.02 mm 0.43 * 0.02 mm LEVER, G, ADJUST position 1 LEVER, G, ADJUST position 2
Step 15: Step 16: Step 17:
Move the carriage so that the top of the head meets the right end of the platen. Rotate the LEVER,PARALLEL,SHAFT so as to set the platen gap to its reference value at the right. (Refer to Table 4-2) Adjust the platen gap with the thickness gauge by sliding it along the SHA~,CR,GUIDE,LOWER. Move the carriage so that the top of the head meets the left end of the platen again. Insert the thickness gauge between the platen and printhead. Confirm that the platen gap is at its adjustment value using the thickness gauge. (Refer to Table 42). If not correct fit in the value, retry from step 7. Remove the printhead. Reattach the HOLDER, RIBBON MASK together with the RIBBON MASK. Insert the FFC into the printhead, and reattach the printhead to the carriage.
4.3 BELT TENSION ADJUSTMENT
Be sure to adjust the tension before reattaching the MOTOR ASSEMBLY,PF. Step 1 : Step 2: Step 3: Step 4: Attach the MOTOR ASSEMBLY,PF to the WE ASSEMBLY,RIG~, and fix it temporarily with the screw CB(P4)(M3 x 6). Attach the timing belt. Press down the SHAFT,PF,TENSION with the tension gauge at an angle of 45 degrees until the tension is set to the reference value. Then, tighten the SHAFT,PF,TENSION. Tighten the screw CB(P4)(M3 x 6).
Tension Gauge Reference Value: 725k25gf

Tension gauge

SHAFT, PF,TENSION

M O T O R ASSY.,PF

F R A M E , ASSY., RIGHT

CB(P4)(M3 X 6)

Figure 4-5. BELT TENSION Adjustment
4.4 DEFAULT, MACHINE INFORMATION SEITING AND BI-DIRECTIONAL ADJUSTMENT
4.4.1 Default and Machine Information Setting
The procedure below is necessary when the DLQ-3000 main board is replaced. Step 1 : Step 2: Step 3 : Step 4: Step 5: Step 6: Step 7: Connect the printer to the PC. Turn the printer on. Load paper into the printer by pressing the FF button. You can use either cut-sheet paper or continuous paper. Load the GWBASIC program into the PC. Insert a diskette containing the DLQ-3000 Adjustment Program. Load the DLQ-3000 Adjustment Program MIxxx.BAS. ( xxx for each destination) When you run the program, the following message appears on the display: DLQ-3000 Adjustment Program 1. Bi-D Adjustment 2. Default& Machine Information Setting 3. END If ready, press 1-3 and the ENTER key. Step 8 : Step 9: Press 2 and then the Enter key to select Default& Machine Information Setting. The following message appears on the display: DLQ-3000 Default & Machine Information Data Registration Program J If you press the Y key, all data stored in the EEPROM on the main board will be initialized to the factory default settings. Before proceeding, confirm the following: 1. The printer is correctly connected to the computer. 2. The printer is on. 3. Paper is loaded in the printer. If ready, press Y and the ENTER key. Step 10: Press the Y and Enter keys. Then the default setting table below appears on the display.

The printer is in the adjustment condition. Step 3 : Step 4:
When the printer is turned off, the paperless condition of the SENSOR ASSY.,LOAD is stored in the EEPROM.
Figure 4-7. SENSOR ASSY.,LOAD Adjustment
CHAPTER 5 Troubleshooting
5.1 OVERVIEW 5.2 UNIT LEVEL TROUBLESHOOTING 5.3 BOARD ASSY., C124 PSB/PSE REPAIR 5.4 BOARD ASSY., C124 MAIN REPAIR 5-1 5-3 5-12 5-15
Figure 5-1. Troubleshooting Procedure. 5-1 Figure 5-2. Unit Replacement-l. 5-4 Figure 5-3. Unit Replacement -2. 5-5 Figure 5-4. Unit Replacement -3. 5-6 Figure 5-5. Unit Replacement-4. 5-7 Figure 5-6. Unit Replacement - 5. 5-8 Figure 5-7. Unit Replacement - 6. 5-9 Figure 5-8. Printhead Cable Signal Assignment. 5-10 Figure 5-9. Power Supply Board Sample Waveform - 1. 5-14 Figure 5-10. Power Supply Board Sample Waveform -2. 5-14 Figure 5-11. Power Supply Board Sample Waveform -3. 5-14 Figure 5-12. Main Board Sample Waveform - 1. 5-18 Figure 5-13. Main Board Sample Waveform -2. 5-18 Figure 5-14. Main Board Sample Waveform -3. 5-18 Figure 5-15. Main Board Sample Waveform -4. 5-19
Table 5-1. Table 5-2. Table 5-3. Table 5-4. Table 5-5. Table 5-6. Table 5-7. Table 5-8. Table 5-9. Measuring Instruments Necessary for Troubleshooting. 5-1 Error Type. ~. 5-2 Problems (Requiring Unit Replacement). 5-3 BOARD ASSY., C124 PSB/PSE Output Voltage. 5-10 Motor Coil Resistance. 5-11 Printhead DriverTest Point. 5-11 Sensor Test Point. 5-1 I BOARDASSY., C124 PSB/PSE Repair. 5-12 BOARDASSYVC124 MAIN Repair. 5-15

Troubleshooting

5.1 OVERVIEW
Troublesome phenomena of different types can be seen at different locations. Therefore, the troubleshooting strategy is not so simple. Considering this situation, this section provides a flow chart (see Figu;e 5-1) which can be used to implement troubleshooting.

.Primary. Repair.

START 5.2
UNIT LEVEL TROUBLESHOOTING [i:!liy
5.3 BOARD ASSY., Cl 24 PSBIPSE REPAIR
Figure 5-1. Troubleshooting Procedure
The first step of the repair procedure involves unit replacement. After any u;it is repl;ced; be sure to execute the n~essa~ adjustments (Refer to Chapter 4) and lubrication (Refer to Chapter 6). Table 5-1 specifies the measuring instruments necessary for the troubleshooting.
Table 5-1. Measuring Instruments Necessary for Troubleshooting

Name Specification

Multimeter Note:

Refer to Note below.

An ana/og frdtimeter can be used, but since the measurements consist makdy of resistances at various locations, a digita/ multimeteris recommended.
The DLQ-3000 employs a self test function and is equipped with a warning buzzer. The printer detects and classifies error states, and informs the user of a specific error type using one of several buzzer patterns. Table 5-2 lists the error types.

Table 5-2. Error Type

Buzzer Pattern Error Status Cause

~.: -.-

t n n n m n n n n m n n n n m n n n n m n, Ul+llfll+ul+luuu quu I+l-$uuuuul+ t 1 I 1

J g 14

Ck(23)

C7(2) \ C6(10,18)

C8(14)
C1(6,22) // J4(7,15) C 2 ( ) C3(3,19)
r nnnnnnn nnnnnmnnmmmmn, YY Uuuuu u+ VUUY Uuuu
,0(913) 2120 C12(12,16) C11(5,17) 8 T T C14(8,20)

C9(1,21)

View A
1-24 : HEAD WIRE No. Cl -14 : COMMON TERMINAL

T : Thermistor Terminal

Figure 5-8. Printhead Cable Signal Assignment
Table 5-5. Motor Coil Resistance
Motor Cfim~e:::r Test Method Set Meter to ohms. Disconnect ~ otor from BOARD ASSY. MAIN and check it with Printer @ower OFF.)

cofl~on Number

~:s~:;;

Meter Reading

(MOTOR ASSY.,CR) CN 4 (MOTOR ASSY.,PF) CN 3 (MOTOR ASSY.,CS)

1,2,3,4

Place one lead on pin 5 or 6, and the other lead on each of the two check the two motor phase. Place one lead on pin 11, and the other lead on each of the two check the two motor phase. Place one lead on pin 7, and the other lead on each of the two check the two motor phase.
Approx. 1.lf2 (25C) Approx. 5.4fi2 (25C) Approx. 76Q (25C)

7,8,9,10

8,9,10,11
Table 5-6. Printhead Driver Test Point

T~:;sg::r

Test Method (Set meter Diodes. Check POWER OFF.)

Q7,Q9 - Q35

Check to base to collector. Check to base to emitter. Reverse leads and test again.
Not open and not shorted from base to collector, base to emitter.
Table 5-7. Sensor Test Point
SensfirC:o~~ector CN !5 Test Method (Set Meter to Ohms. Check Printer POWER OFF.) eter eading
(DETECTOR ASSY.,PG) CN 5 (DETECTOR ASSY.,PF) CN 3 (DETECTOR ASSY.,CS) CN 3 (DETECTOR ASSY.,FILM) CN 14 (COVER OPEN SENSOR for +35V) CN 13 (COVER OPEN SENSOR for +5V)
Place one lead on pin 8 and the other lead on pin 9. Change the LEVER, G,ADJUST position. Place one lead on pin 10 and the other lead on pin 11. Change the LEVER, RELEASE position. Place one lead on pin 13 and the other lead on pin 4 or 12. Set the Color Ribbon Cartridge on the CARRIAGE ASSY. Place one lead on pin 14 and the other lead on pin 12. Set the Film Ribbon Cartridge on the CARRIAGE ASSY. Place one lead on pin 1 and the other lead on pin 2. Open and close the COVER ASSY.,PRINTER. Place one lead on pin 10 and the other lead on pin 4,5 or 6. Open and close the COVER ASSY.,PRINTER.
Meter should toggle between open and short. Meter should toggle between open and short. Meter should toggle between open and short. Meter should toggle between open and short. Meter should toggle between open and short. Meter should toggle between open and short.

OIL PAD, PLAN E. LOWER COVER, OIL PAD GROUNDING PLATE, CR, MOTOR TIMING BELT,CR LEVER, CR,BELT PAPER GUIDE TIMING BELT, PF,FRONT TIMING BELT, PF,REAR ROLLER, LOAD, DRIVE PULLEY, LOAD, ROLLER COMBINATION GEAR,16,20 SPUR GEAR,16 BUSH ING,LOAD,ROLLER SPUR GEAR,18 COMBINATION GEAR,l 5,18 COMBINATION GEAR,l 6,34,93 SPUR GEAR,16 LEVER, RELEASE LEVER, RELEASE, SUPPORT LINK, RELEASE, LEVER SPUR GEAR,25 SPUR GEAR,l 5.5 SHAFT, PF,TENSION SPRING, CR, GUIDE, LOWER COVER, CR, FRAME FRAME ASSY.,LEH
EXTENSION SPRING,350 LEVER, PAPER GUI DE, CHANGE, SUPPORT

566 569

EXTENSION SPRING,180 SHAFT, PAPER GUIDE, CHANGE ROLLER ASSY.,LOAD,SUPPORT CARTRIDGE MOUNTING LEVER CARTRIDGE LOCATION PIN SPUR GEAR,18 SPUR GEAR,12 COLOR SELECT DRIVE LEVER COLOR SELECT DRIVE GEAR DETECTOR ASSY.,RC HOLDER, RIBBON CARTRIDGE COMPRESSION SPRING,645 FASTEN, RIBBON, PLANET SPUR GEAR,1O.4 SPUR GEAR,21.5 CAM,CS CARRIAGE SUB ASSY., LEVER ASSY.,PLANET GEAR ASSY.,RIBBON,DRIVE SPACER,CS MOTOR ASSY.,CS BOARD ASSY.,CS HOLDER ASSY., RIBBON MASK,B RIBBON MASK ASSY.
Ref. No. 570 Description Ref. No. Description
LEVER ASSY.,EJ SENSOR ASSY.,LOAD;B LEVER,CR EXTENSION SPRING,154 KNOB, TRANSMISSION, ADJUST LEVER, TRANSMISSION, ADJUST SPACER, TRANSMISSION, ADJUST ROLLER ASSY.,EJ,ADJUST SPUR GEAR,16 PLATEN ASSY. , PAPER SUPPORT DRIVE SHAFT, PUSH TRACTOR TRACTOR,LEFT TRACTOR, RIGHT SPUR GEAR,25 SHAIT,TRACTOR, REAR LEAF SPRING ASSY.,CR,GUIDE, UPPER EXTENSION SPRING,353 GROUNDING PLATE, FRAME,BASE GROUNDING PLATE,FFC CABLE, HEAD, FRONT CABLE, HEAD, REAR CARRIAGE MOTOR DAMPER DETECTOR ASSY.,RG DETECTOR ASSY.,PF MOTOR ASSY.,CR MOTOR ASSY.,PF FAN ASSEMBLY LEAD

628 629

HARNESS,HP PHOTO INTERRUPTER DAMPER DAMPER SPACER PLATEN SHAFf HOLDER TRACTOR REDUCTION GEAR SPRING PLATEN SHA17 HOLDER EXTENSION SPRING,3275 RETAINING RING TYPE-E(5) RETAINING RING TYPE-E(4) RETAINING RING TYPE-E(3) PLAIN WASHER 8x0.5x15 PLAIN WASHER 5x0.5x1 O LEAF SPRING 8.2x0.15x15 LEAF SPRING 10.5xO.25X18.5 CTPS SCREW (M3x1O) C.C.B. SCREW (M2x8) F/Zn C.B.S. SCREW (M3x6) C.B.B. SCREW (M5x1O) HEAXAGON NUT WITH OW (M4) C. P.(P) SCREW (M3x6) CUP SCREW (M3x16) C. B.S.(O) SCREW (M3x6) SOUND ABSORBER DAMPER, CR, MOTOR SHEET, PROTECT OIL PAD, CLEANING C.B.S. SCREW (M3x8)

598 599

A.5 CASE OUTLINE DRAWING

-.,., (

H J ! Figure A-12. DLQ-3000 Case Outline Drawing

. :, c

-,. f ;
EPSON OVERSEAS MARKETING LOCATIONS
EPSON AMERICA, INC. 20770 Madrona Avenue, P.O. BOX 2842 EPSON DEUTSCHLAND GmbH Z~lpicher Stra13e 6,4000 Dusseldorf 11
Torrance, CA 90509-2642 Phone: (800) 922-8911 Fax: (310)782-5220