JVC AV-56P776 Service Manual page 10

2.7 PROJECTION UNIT REPLACEMENT
2.7.1 ADJUSTMENT DURING REPLACEMENT
When replacing the three R, G and B projection units, first replace the R and B units and perform focus / screen / raster centering
adjustments with reference to the G unit. Then replace the G unit and perform G focus / screen / convergence adjustment. Finally
perform R & B . Convergence adjustments. Use care to simultaneously removes all three-projection units.
2.7.2 DISASSEMBLY CAUTION
The projection units include locations that are not to be disassembled during service. When replacing projection unit parts,
disassemble to the state indicated in the figure below.
The figure indicates screws and wires that are not to be removed. Use care not to remove these.
Deflection yoke wires : to connector on DEF/CONVERGENCE OUT PWB ASS'Y.
[R="RHV", G="GHV", B="BHV"]
Convergence yoke wires : to connector on DEF/CONVERGENCE OUT PWB ASS'Y.
[R="R", G="G", B="B"]
Check that tape is applied to the CRT neck.
If absent, the deflection yoke can dislodge.
LENS ASS'Y
LENS ASS'Y SCREW ( x 4)
Do not remove screws
2/4 POLE
MAGNET
TAPE
ANODE wires : to DIVIDER
DEF. / CONVER. YOKE
CRT ASS'Y (COUPLER ASS'Y)
Do not disassembly
R CRT SOCKET PWB ASS'Y
G CRT SOCKET PWB ASS'Y
B CRT SOCKET PWB ASS'Y
VM PWB (G only)
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