ARCAM Arcam-DV78-dvd-sm free download

File name Arcam-DV78-dvd-sm.pdf

DiVA Service Manual Issue 1.0 DV78 DVD Player ARCAM Bringing music & movies to life DV78 Contents List Circuit Description Power Supply L959AY ! CCT diagram ! Component layout diagram ! Parts list Main Board L960AY ! CCT diagram ! Component layout diagram ! Parts list Display Board L961AY ! CCT diagram ! Component layout diagram ! Parts list Transformers ! L924TX ! L925TX Mechanical Assembly ! Exploded view diagram ! Mechanical and packing part list Diva Dv78 circuit description Overview Fig 1 PSU clock control The DiVa DV78 is a completely new design platform that share a similar circuit topology to the earlier Fs PSUFS1 PSUFS0 PSUCLK released Vaddis V based players such as the Diva Frequency Pin 11 Pin 12 Output Pin 5 88+, Diva 89, DV27. select IC305a IC305a of IC305a 44.1 kHz 0 0 44.1 kHz The player is based around acclaimed Zoran Vaddis 48 kHz 0 0 48 kHz 88.2 kHz 0 1 44.1kHz V chipset coupled to high specification Wolfson D to A 96 kHz 0 1 48 kHz converters for Left and Right channels. 176.4 kHz 1 0 44.1 kHz 192 kHz 1 0 48 kHz Power supply board. Others 1 1 OFF Non-switching The PSU sync signal is driven into the power supply via Resistor R9 if no Sync is present the unit is set to free run x Mains power arrives at IEC inlet socket SKT1 and is due to the RT/RC network attached to Pin 4. filtered by EMC choke LI and Y caps C3 and C4, mains switch SW2a/b switches both Negative and Live IC1 is running in regulated mode and monitors the voltage phases before the power reaches the mains select output on the +5V and +3V3 D.C lines, the two voltages are switch at location SW1 the switch allows the primary summed by TR8 and Driven into the VFB and Comp inputs windings of the transformer TX1 to be wired in either of IC1, the Vol