File name DIAMOND PRO 2070SB + NEC Multisync FP2141SB.pdfPART NO. 599910644
SERVICE MANUAL
CRT DISPLAY
DPro2070SB / DPro2070SB-BK
(C22BW711)
Southern Hemisphere Version
The First Edition
NEC-MITSUBISHI ELECTRIC VISUAL SYSTEMS CORPORATION
FEBRUARY 2003
Contents
1. Circuit description ... 1-1
1.1 Power block ... 1-1
1.1.1 Outline ... 1-1
1.1.2 Rectifying circuit and higher harmonics suppression (active filter)
circuit ... 1-1
1.1.3 Sub power circuit ... 1-2
1.1.4 Main power circuit ... 1-2
1.1.5 Demagnetizing circuit ... 1-2
1.1.6 Power management circuit ... 1-2
1.2 Deflection processor block ... 1-3
1.2.1 Deflection processor (IC601) ... 1-3
1.2.2 Pressure-reduction type horizontal deflection power circuit (IC5C0) ... 1-3
1.2.3 Horizontal width control circuit ... 1-3
1.2.4 Vertical deflection circuit ... 1-3
1.2.4.1 Sawtooth waveform generation, vertical size/position control, and
linearity control circuit ... 1-3
1.2.4.2 Vertical output amplification circuit ... 1-4
1.2.5 High voltage block ... 1-4
1.2.6 DBF (Dynamic Beam Focus) circuit ... 1-5
1.3 |