McIntosh MC-402-voltage Service manual

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Instruction 040843B – BE032004
June 30, 2003 - MC402

MC402 Final Assembly

Instructions For Country Groups 01-10

The MC402 is designed for use in Country Groups 01-10. All conversions are performed by moving two
identical thermistors located on the Power Transformer Terminal Block to new locations as illustrated.

COUNTRY GROUP 01 - USA AND OTHERS

Parts Required:
1 – MC402
1 – 089042 Fuse: 15A 250V SB Ceramic
1 – 170937 Line Cord Set

Step 1: Wire Power Transformer Terminal Block as illustrated in Figure 1.
Step 2: Insert Fuse P/N 089042 into Rear Panel.

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Fig. 1 Wired for 120VAC Operation

McIntosh Laboratory, Inc., 2 Chambers St., Binghamton, NY 13903

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COUNTRY GROUP 02 - JAPAN

Parts Required:
1 – MC402
1 – 126901 Input Rating Decal (100V~ 50/60Hz 12A)
1 – 125781 Line Cord Tag (100V)
1 – 170937 Line Cord Set
1 – 089042 Fuse: 15A 250V SB Ceramic

Step 1: Wire Power Transformer Terminal Block as illustrated in Figure 2.
Step 2: Change the screened Rear Panel Line Cord Input Rating to 100V~50/60Hz 12A, using label P/N

126901
Step 3: Insert Fuse P/N 089042 into Rear Panel Fuseholder.
Step 4: Tag Line Cord P/N 170937 with P/N 125781 (100V) and ship with unit.

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Fig. 2 Wired For 100VAC Operation

McIntosh Laboratory, Inc., 2 Chambers St., Binghamton, NY 13903

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COUNTRY GROUP 03 - TAIWAN

Parts Required:
1 – MC402
1 – 125731 Date of Manufacture Decal
1 – 126095 Line Cord Tag (110V)
1 – 126902 Input Rating Decal (110V~ 60Hz 11A)
1 – 089042 Fuse: 15A 250V SB Ceramic
1 – 170937 Line Cord Set
2 – 126966 EMC Power Labels

Step 1: Wire Power Transformer Terminal Block as illustrated in Figure 3.
Step 2: Insert Fuse P/N 089042 into Rear Panel Fuseholder.
Step 3: Changed screened Rear Panel Line Cord Input Rating to 110V~ 60Hz 11A using P/N 126902.
Step 4: Attach Line Cord Tag P/N 126095 to Line Cord P/N 170937 and ship with unit.
Step 5: Two EMC Power Labels 126966 are to be applied, one to the rear panel adjacent to the Input
Receptacle and the other to the shipping carton.

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Fig. 3 Wired for 120VAC Operation

McIntosh Laboratory, Inc., 2 Chambers St., Binghamton, NY 13903