Agilent Technologies 6683A, 6684A, 6680A, 6681A Disassembly Procedures, Tools Required, Return, End

2010	IF Err THEN
2020	PRINT "An error occurred during the EEPROM read/write, Check for"
2030	PRINT "programming errors. Initialization data may be incorrect."
2040	STOP
2050	END IF
2060	!
2070	PRINT "Operation complete. Program stopped."
2080	STOP
2090	!
2100	Ps_error:	! Error handling subroutine
2110	OUTPUT @Ps;"SYST:ERR?"	! Check for errors
2120	ENTER @Ps;Err
2130	RETURN
2140	!
2150	END

Figure 3-17. Initialization and Factory Preset Replacement Program Listing (Sheet 5 of 5)

Disassembly Procedures

Shock Hazard: To avoid the possibility of personal injury, remove the power supply from service before removing the top cover. Turn off the ac power and disconnect the line cord, GPIB cable, load leads, and remote sense leads before attempting any disassembly. Any disassembly work must only be performed by a qualified support technician.

Observe that the DC RAIL assembly LEDs (DS420 & DS421) are fully extinguished (no live voltages present) before attempting any disassembly work. Any disassembly work must only be performed by a qualified support technician.

Cable connections are shown in Figure 6-2 of Chapter 6 and component part numbers are given in Chapter 5. Reassembly procedures are essentially the reverse of the corresponding disassembly procedures.

Tools Required

þTORX screwdriver size T-15 (for most all retaining screws).

þTORX screwdriver size T-20 (for power supply carry straps).

þSeven (7) mm metric hex driver (to remove GPIB read connector).

þPencil, paper, and labels to make notes to aid in the reinstallation of components.

þWork at a static-free station such as a table covered with static-dissipative laminate or with a conductive table mat (Agilent P/N 9300-0797, or equivalent) using a conductive wrist strap where necessary, such as, Agilent P/N 9300-0969 or 9300-0970.

68 Troubleshooting