Description
HP 3478A Digital Multimeter Service Manual Repair Guide
The HP 3478A is a classic 5-digit benchtop digital multimeter widely used in electronics labs, service centers, manufacturing test environments, and amateur radio stations. This service manual provides the complete technical documentation needed to maintain, troubleshoot, and repair the 3478A, including detailed schematics, component layouts, calibration procedures, and diagnostic information.
Specifications & What's Included
- Equipment: HP 3478A Digital Multimeter
- Document Type: Service Manual / Repair Guide
- Brand: Hewlett-Packard
- Model: 3478A
- Language: English
- Format: Printed Manual
- Condition: All pages present and legible
- Contents: Full schematics, block diagrams, component identification, troubleshooting procedures, and calibration references
Applications
The HP 3478A is an industrial-grade digital multimeter that was the standard workhorse in electronics service facilities from the 1980s onward. It measures AC and DC voltage, current, resistance, and frequency with high accuracy and repeatability. The 3478A remains in active use today in university electronics labs, equipment repair shops, maintenance departments, and by electronics enthusiasts and radio amateurs. This service manual is essential for technicians diagnosing faults, replacing failed components, or bringing units back to calibration specifications. The 3478A represents the mid-1980s era of precision benchtop test equipment, when instruments were built to last and designed to be repaired rather than replaced. Whether you are restoring a unit to working condition or maintaining one in service, this documentation provides the detailed technical guidance needed.
This HP 3478A Digital Multimeter Service Manual is in good used condition with normal shelf wear consistent with a well-maintained reference document. All pages are present and legible, making this a functional resource for service technicians, repair professionals, and hobbyists working with this classic benchtop multimeter. Please contact us if you have any questions before purchasing. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
Warranty Information
Additional Information
Brand: |
Hewlett-Packard |
Model: |
3478A |
Type: |
Digital Multimeter Service Manual |
SKU: |
37874 |
Document Type: |
Service Manual / Repair Guide |
For Equipment: |
HP 3478A Digital Multimeter |
Language: |
English |
Format: |
Printed Manual |
Condition: |
Used – Good Condition |
Review Status: |
Auto-Approved (needs review) 2026-07-09 |
Condition Notes: |
HP 3478A Service Manual in good used condition. All pages present and legible. Normal shelf wear. |