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:
NO. |
PARTS CODE |
PRICE
RANK |
NEW
MARK |
PART
RANK |
DESCRIPTION |
3 |
DUNT-1151ACZZ |
BN |
N |
E |
RF modulator |
There
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.
Download datasheet
IC MC1372P Motorola, color TV video modulator ( PDF, 273Kb )
Download datasheet
IC 74LS04 National Semiconductor, hex inverting gates ( PDF, 121
Kb )
Download datasheet
IC 74LS74 Motorola, dual D-type edge-triggered flip-flop ( PDF,
54 Kb )
Download datasheet
IC 74LS86 National Semiconductor, quad 2-input exclusive-or gates
( PDF, 114 Kb )
Download datasheet IC
4066 SGS-Thomsen, quad bilateral switch ( PDF, 267 Kb )
Download japanese
datasheet IC UPC1037 Double balanced RF mixer / amplifier ( SSB,
PDF, 3,146 Kb )
Download datasheet
Transistor 2SA733 NEC ( PDF, 235 Kb )
Download datasheet
Transistor 2SC945 UTC ( PDF, 59 Kb )
Download datasheet
Transistor 2SC1675 USHA ( PDF, 86 Kb )
Download datasheet
Transistor 2SC2787 NEC ( PDF, 229 Kb )
Download datasheet
Diode 1SS119 HITACHI ( PDF, 27 Kb )
About the µPC1037H ( UPC1037, Double balanced modulation circuit
) the only information I can give this time is the following:
Functions |
Double balanced modulation circuit |
Applications |
For SSB modulation/demodulation.
|
Features |
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.
|
Performances |
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
chips ).
Please send me the
english version of the datasheet of the UPC1037 if you have it, thanks.
|