Dispensing Machine Guide: JHIMS D900 Operation

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How to Operate JHIMS D900 Dispensing Machine – Step-by-Step Video Guide (2026)

Master the JHIMS D900 dispensing machine in 11 short video tutorials — receiving the machine, power and air connections, programming, nozzle and valve maintenance, and production modes.

✎ Written by JHIMS Engineering✓ Reviewed by Rock Xie📅 Updated 2026-08-17⏱ 60 min read

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Direct answer: The JHIMS D900 is a high-speed dispensing machine with precision three-axis motion (ball screws and servo motors), an in-house jetting valve, dual-track configuration and automatic vision position recognition, dispensing at up to 3000 Hz. This guide walks through the 11 video tutorials: receiving and first steps, power and air connection, basic operation, advanced settings, PCB production mode, nozzle maintenance, software interface, valve structure, valve disassembly and cleaning, debugging, and production of infrequent programs — then adds written steps, official parameters, a troubleshooting table and 30+ real Q&A items.

Dispensing Machine Video Tutorial — 11 Steps to Full Mastery

Step Navigator

Click any step to open that tutorial video. The main player above shows the full 11-step sequence — click a step to play it in place.

Dispensing Machine Step-by-Step Written Guide

Step 1: Receiving & First Steps

Watch this video first: what to do when the JHIMS D900 arrives, so the machine is turned on correctly.

Step 2: Connecting Power and Air

Connect the power cord and air pipe, then set the switches for power, air and PCB width. The video also covers the servo motor, lighting, valve temperature control and glue-barrel pressure (0.10–0.40 MPa).

Step 3: Basic Operation

Learn the step-by-step process to operate the JHIMS D900 dispensing machine effectively — from the main interface and program selection to running a dispensing job safely.

Step 4: Advanced Settings

Explore advanced settings and operational tips to optimize performance: running speed, valve open/close time, heating control and valve position calibration using the correction platform.

Step 5: PCB Production Mode Programming

Program the D900 for PCB production mode: engineering views for segmentation, work views for panels, trajectory views for point/line/arc (admin password 12345678). More: dispensing machine knowledge base.

Step 6: Nozzle Maintenance

Configure and perform nozzle maintenance to prevent clogs and ensure smooth operation. Set up automatic maintenance tasks for the nozzle after each PCB board to maintain optimal performance.

Step 7: Software Interface Introduction

Familiarize yourself with the machine software interface, including key parameters and functions for glue dispensing and safety features, with multilingual support.

Step 8: Dispensing Valve Structure and Maintenance

Learn about the structure, disassembly and working principle of the dispensing valve, including maintenance tips for precise glue dispensing.

Step 9: Valve Disassembly and Cleaning

Follow the instructions to disassemble, clean and reassemble the dispensing valve carefully to prevent issues and ensure longevity.

Step 10: Debugging and Maintenance Techniques

Discover methods for debugging and maintaining the dispensing valve, including air pressure and temperature adjustments, to keep the machine at peak performance.

Step 11: Production of Infrequent Programs

For infrequent production programs: set glue dots and lines, choose straight-line, circle or semi-circle modes, adjust glue amount and line width, and use flight mode for speed.

Dispensing Machine Knowledge Base — Original Engineering Insights

Dispensing is repeatability at the milligram level — the same dot or line, in the same spot, cycle after cycle. It depends on the fluid’s viscosity, the dispense pressure and head speed, and a clean path from pot to tip.

Fault Diagnosis Table

Symptom	Probable Cause	Probability	Correction
No fluid flow	Needle blocked by cured residue	40%	Run purge; if blocked, clean needle in solvent
No fluid flow	Air line disconnected / regulator closed	15%	Verify air at 0.4–0.6 MPa
Inconsistent dot size	Seal ring worn	25%	Replace seal ring (fastest-wearing part)
Inconsistent dot size	Air pressure fluctuation	10%	Check compressor dryer and regulator
Stringing / satellite drops	Needle retract too low or valve-open time long	20%	Raise retract height; reduce open time
No fluid flow	Needle blocked by cured residue	–	Run purge; if blocked, clean needle in solvent
No fluid flow	Air line disconnected or regulator closed	–	Verify air at 0.5–0.7 MPa
Inconsistent dot size	Seal ring worn	–	Replace seal ring (fastest-wearing part)
Inconsistent dot size	Air pressure fluctuation	–	Check compressor dryer and regulator
Stringing / satellite drops	Needle retract too low or valve-open time long	–	Raise retract height; reduce open time
No dispensing when board arrives	Positioning photoelectric sensor blocked or dirty	–	Check sensor; remove glue covering the sensor head
No dispensing when board arrives	Digital amplifier settings incorrect	–	Verify green signal level; adjust to minimum
No dispensing when board arrives	IO signal missing	–	Check IO point signal in the software
Positioning camera not working	Camera disabled in software	–	Enable camera function in software settings
Positioning camera not working	Camera cable loose or damaged	–	Reseat or replace the camera cable
Auto height correction not working	Height correction point dirty	–	Clean the correction point surface
Auto height correction not working	Data cable damaged	–	Check and replace the data connection cable
Valve cannot dispense	Glue barrel empty	–	Refill glue; verify barrel pressure 0.10–0.40 MPa
Valve cannot dispense	Valve clogged	–	Disassemble and clean the valve (Step 9)
Skipped dots in flight mode	Row end dot not grouped in column mode	–	Check column grouping for each flight row
Drift after maintenance	Valve position not recalibrated	–	Run valve correction; align crosshair to dot center

Start-up & Shift Checklist

Air supply 0.5-0.7 MPa; regulator and dryer OK
Glue barrel pressure 0.10-0.40 MPa; fluid level sufficient
Purge nozzle with a 3-second test dispense into the waste cup
Photoelectric sensors clean – no glue on the sensor heads
Positioning camera lens clean; image sharp
Nozzle exterior and valve seat clean
No error indicators; emergency stop released
Dispensing area clean; no spilled fluid on moving parts
Extraction / ventilation running when dispensing

Maintenance Cycle Table

Frequency	Task	Method
Daily	Check air pressure and fluid level; purge nozzle before first batch.	Regulator gauge + 3s test dispense
Daily	Keep the dispensing area clean; wipe spilled fluid promptly.	Lint-free cloth
Weekly	Lubricate all key moving parts (ball screws, guides).	Lubricating oil
Weekly	Clean nozzle exterior and valve seat.	Soft cloth + IPA
Monthly	Check fixing screws of moving parts; tighten if loose.	Wrench set
Periodic	Wipe the positioning camera lens with a clean lint-free cloth.	Lint-free cloth
Idle periods	Drain all glue from the tube and clean the glue gun to prevent clogging.	Solvent
Shutdown	Stop via software → close software → shut down PC → stop button → main breaker OFF → unplug power → regulator to 0 psi → close air.	—

Parameter Quick-Reference Table

Parameter	Recommended	Allowed Range	Notes
Air supply	0.5 – 0.7 MPa (5.0–7.0 kgf/cm²)	Dry air, dew point ≤ -17°C	Per user manual
Glue barrel pressure	0.10 – 0.40 MPa	Adjust per fluid	Too high affects dispensing
Dispensing frequency	Up to 3000 Hz	Depends on fluid & needle	High-speed production
Operating temperature	+10°C to +30°C	Humidity ≤50%RH(35°C)	Transport -10 to +60°C
Motion system	Three-axis ball screws + servo motors	—	Stable high-speed platform
Jetting valve	In-house design (IP)	Replaceable seal ring	Fastest-wearing part
Track	Dual-track configurable	Independent control	Reduces wait time
Vision	Automatic position recognition & compensation	Non-contact laser height sensing	—
Control software	UFD / IEM, multilingual	Admin password 12345678	Simple programming
Machine weight	~1000 kg class	Dimensions per model	AT-D450 / D900C / D1200 series

Decision Tree: Dispensing Quality Problem?

Needle/valve condition, air pressure and motion speed decide dot quality. If dots are inconsistent, check the seal ring first, then air stability, then valve-open time. Line partners: L5 guide, M8 guide.

A clogged needle wastes fluid and causes skip-dispensing. Purge before the first batch and set up automatic nozzle maintenance after each PCB board (Step 6) to prevent clogs.

When a board arrives but no dispensing action starts, check the positioning photoelectric sensor, the digital amplifier settings, and the IO signal before suspecting the valve itself.

Flight mode improves cycle time but only for regular dot patterns — the end dot of each row must be grouped in column mode, otherwise the machine skips dots.

Six Most Common Operator Mistakes

Operating without the required air pressure (0.5–0.7 MPa) causes inconsistent dots and valve damage.
Running the machine with a clogged needle wastes fluid and produces skip-dispensing defects.
Ignoring the monthly screw check on moving parts can lead to loose axes and drift.
Leaving glue in the tube during long idle periods causes hardening and clogs the glue gun.
Skipping camera lens cleaning degrades vision positioning and compensation accuracy.
Forcing a valve open without purging after maintenance can damage the jetting mechanism.

Seven Field Rules from 15 Years of Installations

Purge the nozzle before the first batch every day — a 3-second test dispense into the waste cup.
Use the valve correction platform after any valve cleaning to re-align the camera crosshair to the dot center.
Set the glue barrel pressure between 0.10–0.40 MPa; too high degrades dot quality.
Program flight mode only for regular dot patterns; check the column grouping for each row end.
Check the photoelectric sensor and digital amplifier when a board arrives but no dispensing starts.
Back up the hard drive regularly — the manual notes drive failure is not covered by warranty.
Follow the correct shutdown sequence (software → PC → stop → power → air) to protect control data.

Dispensing Machine FAQ

What is the maximum dispensing speed of the JHIMS D900?▼

The D900 achieves a maximum dispensing speed of 3000 Hz, ideal for high-volume SMT production.

Which fluids can the D900 dispense?▼

It handles adhesives, solder paste and other fluids common in electronics manufacturing.

How often should the nozzle be cleaned?▼

Purge before the first batch daily and set up automatic nozzle maintenance after each PCB board (Step 6). Clean the nozzle exterior and valve seat weekly.

How do I switch between glue dot and glue line modes?▼

Use the trajectory view to insert dot, line, circle or semi-circle operations, then adjust glue amount and line width. Flight mode applies to regular dot patterns (Step 11).

What air pressure range is recommended for the D900?▼

The machine air supply is 0.5–0.7 MPa (5.0–7.0 kgf/cm²). The glue barrel working pressure is 0.10–0.40 MPa.

How long does a PCB program changeover take?▼

With the flexible programming and matrix settings, a new PCB program can be created and set up in minutes — the exact time depends on board complexity.

What is the weekly maintenance checklist?▼

Lubricate key moving parts, clean the nozzle exterior and valve seat, keep the dispensing area clean, and check air pressure and fluid level.

How do I calibrate the dispensing valve after cleaning?▼

Open the valve correction page, run a calibration dispense, align the camera crosshair to the dot center, and confirm — then re-verify with a test board.

What fluids can the D900 dispense?▼

Adhesives, solder paste and other fluids common in electronics manufacturing. The machine is designed for chip packaging, PCB assembly and medical products.

How fast is the D900?▼

It achieves a maximum dispensing speed of 3000 Hz, ideal for high-volume production.

What air pressure does the machine need?▼

The machine air supply is 0.5–0.7 MPa (5.0–7.0 kgf/cm²), dry air with dew point ≤ -17°C.

What is the glue barrel pressure?▼

0.10–0.40 MPa. If it is too high, the dispensing quality is affected.

What is the admin password?▼

The admin password is 12345678. Operator, technician and engineer permissions are managed through the software.

How do I create a new program?▼

Select the first folder icon, right-click to create a new program, enter the name, then add marks and operations in the trajectory or work view.

How do I set up the marks?▼

In the Mark edit window, adjust the mark range and set the mark (green = success, red = failure). Set a second diagonal mark for the PCB, then add functions.

How does matrix setting work?▼

Select the generated program, open matrix settings in the work view, pick the reference and target positions, enable equal spacing and copy count, then confirm to generate the array.

How do I adjust Z-axis height and run parameters?▼

Set the Z-axis height, running speed and valve open/close time in the parameter pages. Check flight mode for regular dot patterns (row-end dots need column grouping).

How does heating control work?▼

Click heating; the temperature control display lights up, then adjust the temperature with the up/down keys on the controller.

How do I calibrate the valve position?▼

Open the correction page and run the center calibration – the valve dispenses once, then align the camera crosshair to the dot center and confirm.

Why is there no dispensing when the board arrives?▼

Check the positioning photoelectric sensor (no glue on the sensor head), the digital amplifier green signal level, the IO signal, and whether the sensor is damaged.

Why is the positioning camera not working?▼

Check that the camera is enabled in the software, the camera cable is seated, and the camera is not damaged.

Why is auto height correction not working?▼

Check the software settings, the data cable, and whether the height correction point is clean.

How often should the nozzle be cleaned?▼

Purge before the first batch daily and set up automatic nozzle maintenance after each PCB board. Clean the nozzle exterior and valve seat weekly.

How should the dispensing valve be maintained?▼

Follow the valve structure and maintenance video (Step 8): understand the working principle, then disassemble, clean and reassemble carefully (Step 9). The seal ring is the fastest-wearing part.

What maintenance is required weekly?▼

Lubricate key moving parts, clean the nozzle and valve seat, keep the dispensing area clean, and check air pressure and fluid level.

What should I check monthly?▼

Check the fixing screws of moving parts for looseness and tighten if needed. Back up the hard drive regularly – drive failure is not covered by warranty.

What should I do when the machine is idle for a long time?▼

Drain all glue from the tube to prevent hardening and clean the glue gun thoroughly to avoid clogging.

What is the correct shutdown sequence?▼

Stop via software, close the software, shut down the PC, press the stop button, turn the main breaker OFF, unplug the power, set the air regulator to 0 psi, and close the air supply.

What is flight mode?▼

Flight mode dispenses dots on the fly for regular dot patterns to improve cycle time. The end dot of each row must be grouped in column mode, otherwise dots are skipped.

Where can I find the manual and support?▼

Download the manual from the D900 product page, or contact JHIMS engineering via WhatsApp for machine-specific questions.

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Contact our engineers for a free evaluation, first reply within 12 working hours (Mon–Sat, 09:00–23:00 China Standard Time, UTC+8).

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How to Operate JHIMS D900 Dispensing Machine Step by Step Video Guide (2026)

How to Operate JHIMS D900 Dispensing Machine – Step-by-Step Video Guide (2026)