Pioneer PDP-R03U, Service Manual

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PDP-R03U
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• IC1701 (FA3675CE)
This IC is designed to control the 6-channel PWM switching regulator.
With 5 step-up switching regulator lines incorporated, the IC co10V to +2.5V, +3.3V and +5.8V.
Also with a step-down switching regulator line incorporated, the IC co10V to +6.0V, -5.0V, +12V and +35V.
The lines are individually turned on and off.
• IC1602 (Z86129S)
The Z86129S is built in the TV decoder circuit and serves to process the vertical blanking interval (VBI) data that
has come from the video signal field of the data corresponding to the transmission format defined by EIA-608.
The data flowing along Line 21 is composed of the data of some multiplexed data channels.
Field 1 has 4 data channels: 2 caption channels and 2 text channels.
Field 2 has 5 additional data channels: 2 caption channels, 2 text channels and expansion data service (XDS)
channel. On any of these 9 data channels, the data transmitted can be recovered and displayed.
• IC1601/IC1603 (Z86230S)
The Z86230S functions for the process expansion data service (XDS) in Field 2 during the vertical blanking
interval (VBI).
The XDS data is processed in order to specify the Program Blocking (PB) signal or recovered XDS data packets.
The on-chip XDS filter in the Z86230S enables to recover the XDS data packets only for programming.
The Z86230S is compatible with monitors (Picture-In-Picture) for violence blocking and other XDS data service.