Service Check Points - Yamaha AvantGard N3 Maintenance Handbook

CATEGORY
During During reassembly after servicing, check that wiring bundle connectors for all electrical
assembly circuits are securely connected inside.
During Be careful not to damage the key shutter when removing the keys. Scratch marks on the
assembly- shutter might cause faulty operation.
disassembly
During Do not touch the key shutter with bare hands when removing or installing it. Touching it
assembly- with bare hands will cause fi ngerprint stains and debris to adhere and possibly cause faulty
disassembly operation.
During Never remove the center rails.
assembly
During Be careful not to bend the angle of hardware for the TW speaker or crush or dent the TW
assembly- speaker itself.
disassembly
Other The upper unit and lower unit on the N1 each have their own separate production No.
When contacting us about them, report each of their production No. on the following
sections (upper unit: shelf-lower switch box lower-surface; lower unit: speaker box lower-
surface, inner-left).

SERVICE CHECK POINTS

CHECKPOINT
Center rails
: N3 : N2
N3, N2, N1, NU1
MODELS
N3, N2, N1,
NU1
N3, N2, N1,
NU1
N3, N2, N1
N3, N2
N3, N2
N1
3