This module contains a colour
encoder, a video modulator, and the signal preparation to generate
the output signals RF, RGB, and video to display the screen by a colour
TV, a colour monitor or by a monochrome monitor.
The sound isn't mixed onto the signal RF for a colour TV :-( I know
some low cost modules which support the sound too but they are not compatible
to the original dimensions and to the arrangement of the output connectors
RF and Video.
Circuit diagram and motherboard mark at connector P-9: Color encoder
( M1009ACZL )
MZ-700 SHARP Service Manual info:
seem to be two versions of the RF modulator inbuilt in the production
of the MZ-700 series by SHARP. In my MZ-700 Operation Manual is shown
another circuit diagram as in the MZ-700 Service Manual code 00ZMZ700SM/E.
The Operation Manual shows an IC type µPC1037H. The Sevice Manual
shows an IC type MC1372P. The circut diagrams are completely different.
The MZ-700s I saw had all the µPC1037H. Please mail
me if you have more information about this.
IC MC1372P Motorola, color TV video modulator ( PDF, 273Kb )
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Download datasheet IC
4066 SGS-Thomsen, quad bilateral switch ( PDF, 267 Kb )
datasheet IC UPC1037 Double balanced RF mixer / amplifier ( SSB,
PDF, 3,146 Kb )
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About the µPC1037H ( UPC1037, Double balanced modulation circuit
) the only information I can give this time is the following:
||Double balanced modulation circuit
|| For SSB modulation/demodulation.
|| Carrier leak and signal leak are small.
Intermodulation distortion is small. Required carrier level is small.
A few external parts need not to be adjusted.
The external view is 7-pin signal in-line type.
A package can be mounted easily and is suited for mass production.
8-pin SOP is suited for surface mounting.
|| Signal leak: -32dB
Intermodulation distrotion: -45dB
Carrier leak: -32dB
Topt=-30 to +75deg.C
Vcc=5.0 to 7.0V
This chip is no longer produced by NEC
( production end date 1996, 7-pin-SIP, modulator contains two of this
Please send me the
english version of the datasheet of the UPC1037 if you have it, thanks.