HiTi Digital Pringo P231 User manual

CONFIDENTIAL 1
Pringo
Service Guide
Version: 1.0

CONFIDENTIAL 2
Revision History
Date Revision Description Remark
17-July-2013
0.2 Specification
23-Aug-2013
0.5 Basic chapters of the service guide
14-Sep-2013
0.8 Assembly and Disassembly added
26-Sep-2013
0.9 Add HW theory, Assembly/Disassembly
1-Oct-2013 1.0 First Release

CONFIDENTIAL 3
Outlines:
CHAPTER 1: INTRODUCTION.................................................4
CHAPTER 2: SPECIFICATIONS ...............................................5
CHAPTER 3: OPERATION THEORY & ANATOMY..............6
CHAPTER 4: DISASSEMBLY & ASSEMBLY ........................15
CHAPTER 5: ADJUSTMENT....................................................39
CHAPTER 6: GEAR LIST .........................................................44
CHAPTER 7: ERROR MESSAGE............................................46
CHAPTER 8: CONTACT INFORMATION.............................51

CONFIDENTIAL 4
Chapter 1: Introduction
This document contains operation theory and parts r eplacement procedure sthat are
intended to ease the task of transportation, usage, maintenance and parts replacement.

CONFIDENTIAL 5
Chapter 2: Specifications
Item Description
Model name Pringo -P231
Resolution 290 dpi
Print speed 65 secs
Print size 54x86mm (2" x 3" )
Battery life* Up to 10 sheets
Battery charging time 1.5 hours
Battery 550 mAh Li-polymer
Connectivity WiFi (Peer-to-Peer)
Compatible device iOS , Android
Size (WxLxH) 94x145.8x25.1mm
Weight* 394g (battery included)
Market Specification
Consumable Specification
Part number:
Part number:
Pack - 87.PG901.01XT
Pack - 87.PG902.06XT
Carton – 87.PG901.1AXT
Carton – 87.PG902.13XT
Dimension of box 109x50x70 mm
Dimension of box 156x70x109 mm
Weight per box 90 g
Weight per box 270 g
Sheets per box 30 sheet
Sheets per box 100 sheet
Dimension of carton 315x145x226 mm
Dimension of carton 315x145x226 mm
Weight per carton 2405 g
Weight per carton 2405 g
Sheets per carton 720 sheets
Sheets per carton 800 sheets

CONFIDENTIAL 6
Chapter 3: Operation Theory & Anatomy
The circuit of P231 contain four parts: Main Board, Motors, LED & Sensors and WiFi Module. The
battery is two series(2S) and the capacity is 550 mAH. The voltage of battery is from 8.4V (Battery
full) to 6V (cut off). And the normal voltage of battery for printing is from 8.4V to 7.2V. Main board
transforms the input voltage to TPH necessary voltage (step-up 10.2V +/- 5%) and step-down 5V,
3.3V, 1.8V, 1.0V by voltage converter for ASIC, Memory, and the I/Os. We can use smart phone to
print photo by Pringo Apps .
Main Board
ASIC Architecture
The Quatro 43XX is a highly integrated, fully programmable SOC designed for personal imaging and
printing appliances, i.e. personal-class printers that involve one or more PC-independent functions
such as copy, photo print, print from web, scan to web, fax transmit and fax receive. Specific target
product categories include inkjet multi-function peripherals (MFPs), inkjet direct photo printers, laser
printers, MFPs and internet appliance printers, though the Quatro 43XX is based on Zoran(CSR)’s
QuatroTM platform. This is an advanced SOC architecture that provides original equipment
manufacturers with shorter time-to-market than conventional ASIC solutions through a unique
combination of high performance and easy-to-use programmability.
Key Chip Features:
- Manufactured in 80nm TSMC process.
- Core voltage 1.0V.
- I/O voltage 3.3V.
- Low power modesThe Quatro 43XX provides several different power savings features.
- On-chip PLLThree on-chip allows the user to input a wide range of input clock frequencies.
- Support for spread spectrum clock (EMI reduction) on system and SDRAM PLLs.
- Maximum internal clock frequency is 220MHz.
- 16-bit DDRI/II interface
- On-chip ARM926 CPU.
- On-chip 8K data and 8K instruction cache.
- On-chip tightly-coupled memory (TCM) connected directly to the ARM9.
- On-chip imaging DSP.
- On-chip 32Kbyte SRAM for imaging DSP.
- On-chip RTC.
ASIC
DDR
Nor Flash
Motor Driver
TPH Interface
Nvram

CONFIDENTIAL 7
- On-chip 16-bit AFE.
- On-chip 10-bit ADC.
- On-chip DAC for video output.
- Generic Scanner interface.
- Generic Inkjet printer interface.
- Generic Motor Control interface.
- 8/16-bit wide System Bus interface to interface to ROM, SRAM and other external devices.
- Memory Card support.
- USB 2.0 Hi-Speed compliant device port.
- 3x USB 2.0 Hi-Speed compliant host ports.
- Two Serial ports.
- Serial ROM/EPROM interface.
- LCD Interface.
- TV Interface.
- JBIG Compression/Decompression Unit.
- JPEG Assist Unit.
- Dye-Sub Support Unit.
- Laser engine support.
- Audio Support Unit.
- General Purpose DMA Units.
- Sample pins to allow for different boot modes.
- JTAG test interface for board test and seamless debugging.
- Several independent manufacturing test modes to allow easy testing.
Memory IC
DDR
This 1Gbit DDR2 sdram (K4T1G164QF FBGA84) on main board is to be the data buffer. The image
file, print data are temporarily stored during operation.
- JEDEC standard VDD = 1.8V ± 0.1V Power Supply
- VDDQ = 1.8V ± 0.1V
- 333MHz fCK for 667Mb/sec/pin, 400MHz fCK for 800Mb/sec/pin
- 8 Banks
- Posted CAS
- Programmable CAS Latency: 3, 4, 5, 6
- Programmable Additive Latenc y: 0, 1, 2, 3, 4, 5
- Write Latency(WL) = Read Latency(RL) -1
- Burst Length: 4 , 8(Interleave/nibble sequential)
- Programmable Sequential / Interleave Burst Mode
- Bi-directional Differential Data-Strobe (Single-ended data-strobe is an optional feature)
- Off-Chip Driver(OCD) Impedance Adjustment
- On Die Termination
- Special Function Support - 50ohm ODT - High Temperature Self-Refresh rate enable
- Average Refresh Period 7.8us at lower than TCASE 85°C, 3.9us at 85°C < TCASE < 95 °C
- All of products are Lead-Free, Halogen-Free, and RoHS compliant

CONFIDENTIAL 8
Nor Flash
This Nor Flash is SPI Serial Flash, 64Mbit flash memory is to store the firmware code and etc.
- Single Power Supply Operation
2.7 to 3.6 volt for read, erase, and program operations
- Serial Peripheral Interface compatible -- Mode 0 and Mode 3
- 67,108,864 x 1 bit structure or 33,554,432 x 2 bits (Dual Output mode) structure
- 2048 Equal Sectors with 4K byte each
Any Sector can be erased individually
- 128 Equal Blocks with 64K byte each
Any Block can be erased individually
- Program Capability
Byte base - Page base (256 bytes)
- Latch-up protected to 100mA from -1V to Vcc +1V
TPH Interface
Print data will be shifted into TPH during each clock. After 128 shift clocks, one line data will be
shifted to TPH. Latch/ signal will latch the print data. Strobe/ signal will heat the corresponding
heater elements on TPH according to shift-in data. More the storbe/ time, more the dye of the ribbon
is transferred to paper. P231 using Even-odd Printing method to print color image.
TPH ASSY

CONFIDENTIAL 9
Symptom of TPH pixel fail
Motors
Cam motor
Cam motor is a bipolar motor and driven by driver IC DRV8821. DRV8821 is designed to drive dual
bipolar stepping motor and includes pulse-width-modulation (PWM) control of ouput current to 1.5A
MAX. For PWM control, the maximum output current is determined by user's selection of a reference
voltage and sensing resistor.

CONFIDENTIAL 10
Capstan motor
Capsten motor is a bipolar motor and driven by driver IC DRV8821. DRV8821 is designed to drive
dual bipolar stepping motor and includes pulse-width-modulation (PWM) control of ouput current to
1.5A MAX For PWM control, the maximum output current is determined by user's selection of a
reference voltage and sensing resistor.
LED & Sensors
Status/Error LED
Show printer status and error message.
- LED White blinking: Ready or Busy.
- LED Red blinking: Error.
- LED Yellow blinking: Low Battery.
LE/Jam/Paper Out Sensor
Detect the existence of paper.

CONFIDENTIAL 11
Ribbon LED/Sensor
Infarred Sensor. It detects ribbon color Y, M, C, S and O, which are index as double or single black
bar individually.

- Yellow Frame Searching: detect 2 black bars.
- Other frames (M C G O) Searching: detect 1 black bar.
WiFi Module
WM1020WU is a WLAN 11n USB module, which fully supports the features and functional
compliance of IEEE 802.11N, E and I standards. It supports up to 150Mbps high-speed
wireless network connections. It is designed to provide excellent performance with low power
consumption and enhance the advantages of robust system and cost-effective. It is targeted
at competitive superior performance, better power management applications.
- Operates in 2.4 GHz frequency bands.
- 1x1 MIMO technology improves effective throughput and range over existing 802.11 b/g products.
- Data rates: up to 150Mbps.
- 802.11e-compatible bursting and I standards.
- BPSK, QPSK, 16 QAM, 64 QAM modulation schemes.
- WEP, TKIP, and AES, WPA, WPA2 hardware encryption schemes.
- Small footprint: 13×13×2.4mm, 12-half-holes PCB module.
- OS support: Android, Windows.
- RoHS compliance.

CONFIDENTIAL 12
Mechanism & Movements
Basic functions for the mechanism as shown below, these are basic but essential for the
printer movement.
Function layout
Location of major parts

CONFIDENTIAL 13
Printing Process
Cam Position
Function Cam
TPH Feeding
Roller Swing RBN
Swing ADF
ADF P1 L1 Down Lock Release
Initial Position
P2 L1 Up Lock Lock
Search Ribbon
P3 L1 Up Release Lock
Printing P4 L2 Up Release Lock
A
Job tart
Move Cam to
P3
Error !!
Ribbon Out
Move Cam to
P1
Paper
feeding
LE sensor
Move Cam to
P2
Position
Paper
A
Move Cam to
P4
Print Y
Move Cam to
P3
Search RBN
M,C,G,O
Move Cam to
P4
Job finished ?
Move Cam to
Print
M,C,G.O
Job finished
Seach RBN
Y

CONFIDENTIAL 14
Paper Path
Ribbon Movement Mechanism

CONFIDENTIAL 15
Chapter 4: Disassembly & Assembly
Safety Instructions
Read these instructions carefully. Save these instructions for future reference.
Follow all warnings and instructions marked on the printer.
Before disassembly, the printer should be power off and remove the battery
pack and adpater. Any PCB that is damage because of mishandling and
disassembly will be judged as “out-of-warranty”.
Do not place the printer on an unstable cart, stand, or table. The printer may get damaged by
a fall.
Openings in the chassis and the bottom are provided for ventilation purposes and to ensure
reliable operation of the printer by protecting it form overheating: these openings must not be
blocked or covered.
Placing the printer on a bed, sofa, rug, or other similar, not firm surfaces may block the
openings. The printer should never be placed near or over a radiator or heat register, proper
ventilation and cooling must be provided at all times.
The printer should only be operated with the type of power indicated on the marking label. If
you are not sure of the type of power available in your area, consult your dealer or local
power company.
If an extension cord is used with this product, make sure that the total ampere rating of the
equipment plugged into the extension cord does not exceed the extension cord ampere rating.
Also, make sure that the total rating of all products plugged into the wall outlet does not
exceed the fuse rating.
Tools Required
Name Model Q’ty
Screwdriver - 1
Plus Screwdriver (small) - 1
Flat-blade screwdriver (small) - 1
Spring hook (optional) - 1
Nipper - 1
Pliers - 1

CONFIDENTIAL 16
Maintenance Parts Replacement Procedures
Parts Name ASSY_PRINGO P231 TOP
CASE WHITE – SPARE
ASSY_PRINGO P231 BOTTOM
CASE WHITE – SPARE
ASSY_PRINGO P231 MID
FRAME-SPARE
ASSY_PRINGO P231 PAPER
DOOR WHITE-SPARE
Part No. 46.P3003.001
46.P3004.001
46.P3002.001
46.P3001.001
Tools Screwdriver Procedure No. 1
Position Name for later disassembly identification:
TOP CASE
BOTTOM
CASE
MID FRAME
P
APER DOOR

CONFIDENTIAL 17
Step 1
Turn the printer to the front side and open the ribbon door by pressing the ribbon door button.
Step 2
Gently pull the casing backward to release from the linkage hooks. Close door after removing the
casing.

CONFIDENTIAL 18
Step 3
Turn the printer to the front side and push in the hooks below and pull the case upward with a PVC
CR-80 card and circle it through all sides of the printer until the case is loosen.

CONFIDENTIAL 19
Step 4
Take TOP CASE out.
Step 5
Unscrew two screws to take PAPER DOOR out.

CONFIDENTIAL 20
Step 6
Pull the top of MID FRAME, so you can move hooks of BOTTOM CASE up with the PVC CR-80
Card.
Step 7
After the hooks of the BOTTOM CASE are loosen then pull it out from MID FRAME.