Welch Allyn GSI 38, Service Manual

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CAUTION STATIC SENSITIVE DEVICES/USE STATIC PROTECTION
DISASSEMBLY
OPENING CASE
TO GAIN ACCESS TO INTERNAL COMPONENTS. REMOVE 2 SCREWS MARKED “A” LOCATED
UNDER FRONT EDGE OF UNIT AS SHOWN IN DRAWING 1. NOTE: IT MAY BE EASIER TO
STABILIZE UNIT AND LOCATE COMPONENTS IF UNIT IS PLACED ON LER SIDE PRIOR TO
REMOVING SCREWS AND OPENING CASE.
TO REMOVE PROBE
DISCONNECT REAR PANEL POWER CONNECTOR. OPEN CASE. DISCONNECT AUDIO/TYMP
BOARD CONNECTORS J8 AND SHIELD 1. DISCONNECT THE PNEUMATIC TUBING FROM THE
PUMP PNEUMATIC FITTING BY GENTLY PULLING ON TUBING NEAR THE PNEUMATIC FITTING.
REMOVE CABLE CLAMP SCREW MARKED"C" AS SHOWN IN DRAWING 1 AND ENLARGED
DETAIL VIEW “A”. GENTLY LIFT THE CABLE STRAIN RELIEF OUT OF THE BOTTOM CASE SIDE
PANEL.
TO REMOVE HL BOARD ASSEMBLY
DISCONNECT REAR PANEL POWER CONNECTOR. REMOVE HL KNOB AND THE HL SWITCH
MOUNTING HARDWARE (7116” HEX NUT & WASHER) AS SHOWN IN DRAWING 2. OPEN CASE.
REMOVE SCREW MARKED "D" AS SHOWN IN DRAWING 1. GENTLY LIFT BOARD AWAY FROM
TOP CASE.
TO REMOVE AUDIO/TYMP BOARD
DISCONNECT ALL REAR PANEL CONNECTORS OPEN CASE. DISCONNECT AUTO/TYMP BOARD
CONNECTORS J2 THRU J8 AND SHIELD 1 (ie ALL). LOOSEN OR REMOVE 2 SCREWS MARKED
"B" AS SHOWN IN DRAWING 1. PULL BOARD CAREFULLY FORWARD THEN UP AND OUT OF
CASE.
TO REMOVE TIP-UP FEET
DISCONNECT REAR PANEL POWER CONNECTOR. OPEN CASE. REMOVE SCREWS MARKED
"E" AS SHOWN IN DRAWING AND DRAWING 2.
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