McQuay MLCV Guía para resolver problemas descargar pdf (Pagina 60)

9. Conversion from Old Sequential Board to New Sequential Board

(For wiring up to 1000 metres)

9.1 Sequential Main Board SQMB01(Old Version)

9.2 Sequential Main Board SQMB01 (New Version)

58 59

J1 & J2

Rework instruction:

SQMB01 (Main Board) from old

version to new version

Step 1: Remove Jumper J1 and J2.

Step 2: Add Part: 2051-MAX1483

IC :MAX1483 to U8

9.3 Sequential Main Board SQMB01 (New Version)

9.4 Sequential LCD Panel SQLCD (New Version)

Part : 2051- MAX1483

IC : MAX1483

Jumper J1 and

J2 removed

SQLCD (LCD Panel) from old to new

Step 1:Remove Jumper: J1, J2

Step 2:Add Chip Resistor. 1/10W 5%

200K to R8, R9, R10

Step 3: Add Part: 1000000030

IC: SMD MAX1483CSA to U4

R10

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McQuay MLCV Guía para resolver problemas Pagina 60