General View

Keyboard detail

Front sticker

Rear: RF output, channel trimer, BW/COlor/ switch, composite o/p,
RGB o/p. Below are cassette i/o jack. Next system DIP switches,
2 Joystick connectors (covered with plate), printer port, volume
knob, reset switch, AC in and DC out below (to printer), ends
with power switch. In upper half expansion bay.

Expansion bay inside - 2 slots.

Back sticker

Peripheral covers removed. Internal tape recorder is connected to
the white connector on the left of RF modulator can
(here bridged with 3 blue/black wires).

Inside

Mainboard general view

Memory. Notice quite good speaker.

CPU, ROM and parallel I/O chips.

PLA, video RAM expansion sockets (two 16k*4 DRAM goes here),
8255 parallel circuit

Boot screen

Monitor program

Loading BASIC...

Basic itself.

MZ-821: General view

MZ-821: Tape recorder

MZ-821: Tape recorder isnide

MZ-821: Place for cassette

MZ-821: Keyboard PCB

MZ-821: Memory is from different manufacturer

MZ-821: Mainboard

MZ-821: Modulator PCB

MZ-821: Under the modulator

MZ-821: Modulator components