Test equipment DC power supplies

Agilent 6010A: troubleshooting and error codes

The ServiceForge knowledge base holds 35 documented symptoms for the Agilent 6010A, with 54 ranked causes, 83 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI

Symptoms

Power supply malfunction on startup high voltage

Power supply fails turn-on self-test or gives indication of malfunction

Ranked causes

1. Input power not available or power cord/circuit breaker issue (common)
2. Incorrect mode switch settings (common)
3. Loose connections or interrupted circuits (occasional)
4. Internal hardware defect (rare)

First check

Verify input power available

Test point: AC power inlet; power cord connection
Expected: Input AC power available; power cord connected securely to AC outlet

2 more checks with pass and fail actions, 4 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit fails self-test or indicates malfunction

Power supply fails turn-on self-test or shows other malfunction indication

Ranked causes

1. Input power not available or incorrect (common)
2. Mode switch A2S1 incorrectly configured (common)
3. Loose connections or interrupted circuits (common)
4. Ground terminal not properly connected to earth ground (occasional)

4 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV regulation poor or transient response slow high voltage

Output voltage regulation is inadequate or response to load changes is sluggish

Ranked causes

1. Low AC mains voltage (common)
2. CV Circuit malfunction (common)
3. Incorrect sensing configuration (occasional)

First check

Measure AC mains input voltage

Test point: AC input
Expected: Within specification for unit
Tools: Voltmeter

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Maximum voltage less than 200Vdc high voltage

Output voltage cannot reach specified 200Vdc maximum

Ranked causes

1. CV Circuit fault (common)
2. Output rectifier diodes defective (occasional)
3. Mains voltage select jumper incorrect (occasional)

First check

Set output voltage to maximum and measure + OUT

Test point: + OUT
Expected: 200Vdc nominal
Tools: DMM, variable external supply

3 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit produces no output high voltage

Power supply fails to generate output voltage at rear terminals

Ranked causes

1. PFET driver control signal absent or faulty (PWM-ON and PWM-OFF both low) (common)
2. PFET failed (PWM signals present but no output) (common)
3. Rectifier or input rail voltage missing (occasional)

First check

Verify bias voltages at control board test connector

Test point: A2J7
Expected: Bias voltages per Table 3-1
Tools: Voltmeter, control board test connector P/N 5060-2865

3 more checks with pass and fail actions, 3 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CC regulation poor high voltage

Output current regulation inadequate or limit does not function properly

Ranked causes

1. Low AC mains voltage (common)
2. CC circuit component failure (common)

First check

Measure AC mains voltage

Test point: AC input
Expected: Within specification
Tools: Voltmeter

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Output current oscillation in CC mode

Constant current output exhibits unwanted oscillations or instability; regulated current rippling or unstable

Ranked causes

1. Differentiator circuit A2U4A fault (common)
2. CC Error Amp or summing junction fault (occasional)

First check

Measure I-MON output

Test point: A2U1-out (I-MON), referenced to A2J7-4 (GND)
Expected: I-MON in volts ≈ 1/3 x (output current in amperes) or 1/24 for 6011A V, Within expected ratio

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Output noise greater than 1 kHz high voltage

High-frequency noise present on output exceeding 1 kHz

Ranked causes

1. Transformer or filter defect (common)
2. Snubber capacitors or resistors defective (occasional)

First check

Measure output noise with oscilloscope

Test point: + OUT, – OUT
Expected: Minimal noise > 1 kHz
Tools: Oscilloscope

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Output voltage oscillation in CV mode

Constant voltage output exhibits unwanted oscillations or instability; regulated voltage unstable or rippling

Ranked causes

1. CV Error Amp circuit fault (common)
2. CV loop compensation or feedback circuit fault (occasional)

First check

Measure CV monitor output V-MON

Test point: A2U2-out (V-MON), measured against A2J7-4 (GND)
Expected: V-MON = 1/40 x (voltage between +S and -S) in volts, Within expected ratio

1 more check with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Power supply output voltage not to specification caution

Supply produces output but measurements do not meet specified values or ranges

Ranked causes

1. Front panel control potentiometer or switch failure (common)
2. DC-to-DC converter circuit malfunction (occasional)

First check

Verify front panel voltage outputs

Test point: A3 test connector per Table 3-3
Expected: CV VOLTAGE 0-5V, CC VOLTAGE 0-5V
Tools: Test connector, voltmeter

2 more checks with pass and fail actions, 2 corrective actions, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unexplained OVP shutdowns high voltage

Output shutdowns triggered by overvoltage protection circuit without clear cause

Ranked causes

1. OVP Circuit malfunction (common)
2. CV Circuit fault (common)

First check

Measure voltage at test point A2J7-2

Test point: A2J7-2
Expected: 1.25Vdc
Tools: DMM

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Unit cycles on and off randomly high voltage

Power supply cycles between on and off states without operator command

Ranked causes

1. AC surge and dropout detector malfunction (common)
2. Mains voltage select switch incorrect (occasional)

First check

Verify stable AC mains input voltage

Test point: AC input to isolation transformer
Expected: Stable mains voltage
Tools: Voltmeter

2 corrective actions and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Constant current circuit

Calibrate constant current circuit on Control Board A2 after component replacement

Ranked causes

1. Control Board A2 CC circuit requires I-MON zero and full scale calibration after repair (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Constant voltage circuit

Calibrate constant voltage circuit on Control Board A2 except current source components

Ranked causes

1. Control Board A2 CV circuit (non-current-source) requires zero and common-mode calibration (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Control board test points voltage verification high voltage

Verify voltage levels at control board test connector A2J7 test points for proper circuit operation

Ranked causes

1. Reference or bias voltage out of specification (unknown)

First check

Measure +5V bias voltage at pin 24

Test point: A2J7 pin 24
Expected: 5.0 Vdc
Tools: Voltmeter

18 more checks with pass and fail actions are in ServiceForge. Connect ServiceForge to your AI

Calibration: Diode board power limit

Calibrate power limit after replacement of CR4 or CR5/CR1 on Diode Board A5

Ranked causes

1. Diode Board A5 requires power limit calibration after CR4 or CR5/CR1 replacement (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: I-MON zero and full scale

Calibrate current monitoring zero and full scale on Main Board A1 after component replacement

Ranked causes

1. Main Board A1 requires I-MON calibration after repair of R11/R13 (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Meter full scale

Calibrate meter full scale on Control Board A2 after repair of U7, R84, R85, R24

Ranked causes

1. Control Board A2 U7, R84, R85, R24 requires meter full scale calibration after repair (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: OVP circuit overvoltage protection threshold

Verify and calibrate overvoltage protection (OVP) circuit response to ensure unit limits output above set threshold

Ranked causes

1. OVP circuit requires calibration or verification (unknown)

First check

Measure OVP Bias Supply A2U7-2

Test point: A2U7-2, referenced to A2J7-4 (GND)
Expected: 2.5Vdc

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Power limit comparator

Calibrate power limit comparator on Control Board A2 after component replacement

Ranked causes

1. Control Board A2 Power Limit Comparator requires calibration after repair (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Resistance programming full scale

Calibrate resistance programming full scale for CV current source on Control Board A2

Ranked causes

1. Control Board A2 CV current source requires resistance programming full scale calibration (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Calibration: Voltage monitoring zero

Verify zero calibration of voltage monitoring circuit on Main Board (A1)

Ranked causes

1. Main Board A1 requires V-MON zero calibration after repair of R11/R13 (unknown)

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CC circuit functional verification high voltage

Test constant current loop response with external load configured in constant current mode; verify differentiator and error amp functions

Ranked causes

1. CC control circuit requires verification (unknown)

First check

Measure I-MON with IP=5V (6015A model)

Test point: A2U4-8, referenced to A2J7-4
Expected: 0.125Vdc (6015A) or 0.88Vdc for other models
Tools: DMM

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CC oscillates with inductive loads high voltage

Output current or voltage oscillates when driving inductive loads

Ranked causes

1. CC feedback compensation defect (common)

First check

Connect inductive load and observe output for oscillations

Test point: + OUT, – OUT
Expected: Stable output without oscillation
Tools: Oscilloscope, inductive load

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV circuit functional verification high voltage

Test constant voltage control loop response and buffer amplifier gain with CV loop open and power mesh shutdown

Ranked causes

1. CV control circuit requires verification (unknown)

First check

Measure VM (monitor output)

Test point: A2U5-1, referenced to A2J7-4
Expected: 3.75Vdc
Tools: DMM

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV load effect test

Verify constant voltage load regulation by measuring output voltage change from open-circuit to full load

Ranked causes

1. Output voltage drift under load indicates CV regulation error (unknown)

First check

Set output voltage to specified value at full current

Test point: + S and - S terminals
Expected: 60Vdc (6010A), 7.0Vdc (6011A), 20.0Vdc (6012B), 200Vdc (6015A)

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV load transient recovery time test

Verify output voltage recovery time following step load change between 10% and 100% of rated current

Ranked causes

1. Slow output voltage recovery on load transient indicates regulation circuit issue (unknown)

First check

Set output voltage to specified value

Test point: + S and - S terminals
Expected: 60Vdc (6010A), 7Vdc (6011A), 20Vdc (6012B), 200Vdc (6015A)

1 more check with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV oscillates with capacitive loads high voltage

Output voltage oscillates or becomes unstable when driving capacitive loads

Ranked causes

1. CV feedback compensation defect (common)

First check

Connect capacitive load and observe output for oscillations

Test point: + OUT, – OUT
Expected: Stable output without oscillation
Tools: Oscilloscope, capacitive load

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV overshoots beyond setpoint high voltage

Output voltage exceeds setpoint and does not stabilize

Ranked causes

1. CV control loop component failure (common)

First check

Set output to 20Vdc and observe step response

Test point: + OUT
Expected: Voltage settles to 20Vdc without overshoot
Tools: Oscilloscope

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV PARD peak measurement test

Verify constant voltage ripple and noise peak-to-peak from 20kHz to 20MHz across full load range

Ranked causes

1. Output peak-to-peak noise exceeds specification indicates ripple/noise problem (unknown)

First check

Connect oscilloscope with blocking capacitors and differential measurement setup

Test point: + OUT and - OUT terminals
Expected: Proper differential two-channel setup per Figure 2-5
Tools: Oscilloscope, 0.01µF capacitors, 50Ω coaxial cables

4 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV PARD RMS measurement test

Verify constant voltage ripple and noise (PARD) in RMS voltage from 20Hz to 20MHz across full load range

Ranked causes

1. Output RMS noise exceeds specification indicates ripple/noise problem (unknown)

First check

Connect test equipment with common-mode choke per Figure 2-4

Test point: + S and - S terminals
Expected: Proper ground connection through common-mode choke
Tools: 50Ω coaxial cable, common-mode choke, true RMS voltmeter

3 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

CV source effect (line regulation) test high voltage

Verify constant voltage line regulation by measuring output voltage change from minimum to maximum input AC

Ranked causes

1. Output voltage drift with input AC variation indicates CV line regulation error (unknown)

First check

Connect unit through variable autotransformer at low line voltage

Test point: AC power input
Expected: 104Vac for 120Vac nominal

5 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Front panel display or control inoperative caution

Front panel switches, potentiometers, or display not responding or showing incorrect values

Ranked causes

1. Front panel component failure or solder joint cold (common)

First check

Measure +7.5V bias supply on front panel

Test point: A3 test connector pin 1
Expected: 7.5V, ±5%
Tools: Voltmeter, test connector

5 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

No current limit high voltage

Output current does not limit to specified maximum

Ranked causes

1. CC Circuit failure (common)

First check

Measure output current at maximum setting

Test point: + OUT, – OUT
Expected: ≥ 17Adc typical
Tools: DMM, external load

1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI

Overall troubleshooting setup and power supply verification high voltage

Verify basic power supply outputs and circuit node voltages during bench diagnostics with main troubleshooting setup configuration

Ranked causes

1. Power supply outputs out of specification (unknown)

First check

Measure +15V supply on A5C3 with power ON

Test point: A5C3 (+) node
Expected: 10Vdc
Tools: DMM

2 more checks with pass and fail actions, 1 corrective action, and part numbers are in ServiceForge. Connect ServiceForge to your AI

Community

0 fixes logged by technicians through their AI, with outcomes, for this model.

ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.