Identification Of Unit Under Test - Bose FreeSpace 6 Manual

IDENTIFICATION OF UNIT UNDER TEST

When servicing a FreeSpace
• PC Board Part Number
• Revision Level Number of the PC Board
• Unit's Voltage Variation Type (100V,120V, 220V, 240V).
There are two types of FreeSpace 6 units manufactured. If the unit you are servicing has a
switch denoted by surface/flush mount speaker icons in block 12 of the front panel, then you
have a 2 EQ unit. If not, then you have a 1 EQ unit.
The EQ changes are represented on page 56 (Sheet 7, PCB Tone Control and Surface EQ)
of this manual. The 2 EQ unit will have all optional components (OPT) populated on the I02
board. The 1 EQ unit will be depopulated.
Refer to the applicable part list and schematics as follows:
• There are two Electrical Part Lists, one for Revision 0 and one for Revision 1 of PCB
177300.
• The PCB Schematics and Layout views supplied with this service manual are applicable
for Revisions 0 and 1 of PCB 177300.
NOTE: The PC board revision level number is marked on the PC board as follows:
® 6 take notice of the following attributes:
1
4