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Panasonic FZ-1 R.E.A.L. 3DO

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Panasonic FZ-1 R.E.A.L. 3DO Interactive Multiplayer
Panasonic FZ-1 3DO front
Panasonic FZ-1 R.E.A.L. 3DO Interactive Multiplayer
Specifications
ManufacturerMatsushita Electric Industrial (Panasonic)
TypeGame console
Released4 October 1993 (North America); 20 March 1994 (Japan); June 1994 (Europe)[1]
Intro priceUS$699.99; ¥79,800[1]
CPU32-bit RISC ARM60, 12.5 MHz[2]
Memory3 MB (2 MB main RAM, 1 MB VRAM); 1 MB ROM
Storage32 KB battery-backed SRAM
Display640 × 480, up to 16.7 million colours
Sound16-bit stereo PCM, 44.1 kHz sampling
MediaDouble-speed CD-ROM drive, 32 KB read buffer
Ports / interfaceControl port (9-pin D-sub), 30-pin expansion port, 68-pin AV expansion port, S-Video, composite and RF video, stereo audio
Power120 V AC, 30 W (U.S.); 230–240 V AC (U.K.)
Dimensions284 × 268 × 88 mm
Weight3.0 kg (U.S. manual); 2.9 kg (Canada and U.K. manual)
OS / Firmware—
SuccessorPanasonic FZ-10
Model no.FZ-1

The Panasonic FZ-1 R.E.A.L. 3DO Interactive Multiplayer is the first console built to The 3DO Company's design, made by Matsushita and sold under the Panasonic brand. It went on sale in North America on 4 October 1993 at US$699.99, in Japan on 20 March 1994 and in Europe in June 1994.[1] It is a front-loading console with a double-speed CD-ROM drive, a power supply on the main board and a fixed mains lead.[2][3] Panasonic replaced it with the top-loading FZ-10 in November 1994.[1]

Specifications

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FZ-1 specifications (service manual CPD9309012C0, p. 1-1)
Item Panasonic's figure
CPU 32-bit RISC processor ARM60, 12.5 MHz
Memory 3 MB in total: 2 MB main RAM, 1 MB VRAM
SRAM 32 KB, battery backed
ROM 1 MB
DSP 16-bit digital signal processor
Video outputs Composite (NTSC, RS170A), S-Video, RF on channel 3 or 4
Resolution 640 × 480 (320 × 240 internally)
Colours Up to 16.7 million
Audio 16-bit stereo PCM, 44.1 kHz
CD-ROM drive Double speed, 32 KB read buffer; 12 cm and 8 cm discs
Ports Control port (9-pin D-sub, daisy chain), 30-pin expansion port, 68-pin AV expansion port for the FMV cartridge
Size and weight 284 × 268 × 88 mm, 3.0 kg
Power 120 V AC, 30 W
Indicators Red power LED, green CD access LED

[2] Panasonic's manual for the Canadian and U.K. models adds the PAL figures for the U.K. console: 768 × 576 (384 × 288 internally), RF on PAL-I channel 21, a 230–240 V AC supply and a weight of 2.9 kg. It names the 68-pin port the "Video CD adaptor" slot.[4]

Hardware

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The CPU is a VLSI ARM60 (IC100). The two custom 3DO chips are MADAM (IC120) and CLIO (IC140). The 1 MB system ROM is IC340 and the 32 KB save RAM is IC350, backed by a lithium cell (BT400) through the back-up controller IC400.[2][5] The CD-ROM drive is Panasonic's CR-560-B; the parts list for the third main board type gives it as CR-560-BCD-4, and the drive board inside it changed from LMEP0253A to LMEP0253A-2 and then LMEP0306A over the three board types.[2][6][7] Its laser is the Sanyo SF-92.5, which the FZ-10 and the CR-563-B drive also use.[8]

Panasonic FZ-1 3DO MADAM chip
The MADAM chip on an FZ-1 main board

Board revisions

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Panasonic's service documents cover three main board assemblies for the U.S. FZ-1, each with its own parts list:

  • The first assembly, DL3U10576AAA, carries the DRAM on a separate DRAM board (DL3U10617AAA) plugged into the main board by two 50-pin connectors. It is covered by the original service manual.[2]
  • The second, sold as DL3U10576DAA and DL3U10576EAA, is covered by supplement CPD9311017S1. Panasonic tells the two apart by the serial-number label on the rear: suffix "A" is the first type, suffix "B" and later the second.[6]
  • The third, DL3U10649HAA, applies from serial number 4IKSI01001. Panasonic lists its major changes as IC160 (a DAVP536A-X1K colour encoder), IC200 (the audio DAC), the circuit diagrams, the board and the parts list.[7]

Collectors identify the boards by the copyright year printed on them. Early "matte top" consoles, made up to May 1994, usually have a 1993 board (DFUP0576ZAM2 or ZAM3); "shiny top" consoles, made from June 1994, usually have a 1994 board (DFUP0648 or DFUP0649). ConsoleMods reports that the matte-top consoles have a fan and a steel cover over the power section, and the shiny-top consoles are passively cooled.[3][5] Panasonic's own supplement CPD9401004S1 records a change of fan motor, the change of the 50-pin DRAM board connectors and the move of the system ROM from an EPROM (DA27C81GW15D) to a mask ROM (DA5383B0-S).[9] Supplement IMD9503003S0 lists the parts needed to convert the CD-ROM drive from a brush spindle motor to a brushless one.[10]

Power supply

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The supply is part of the main board. The mains transformer T1 feeds a bridge rectifier (D1) through the 3.15 A fuse F1 and the filter L1. The 6800 µF reservoir C1 holds about 14.5 V with the console on. An SI-3090CA series regulator (IC11) makes +9 V and an L4960 switching regulator (IC31) makes +5 V. The POWER switch SW51 switches both regulators through their control pins, so the transformer is energised whenever the console is plugged in. A crowbar of Zener diodes and the thyristor D2 blows F1 if the transformer output, the +9 V rail or the +5 V rail rises too far.[11][2] The details and test values are on the Panasonic FZ-1 Troubleshooting Guide.

Controls and connections

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The front carries the POWER button and READY indicator, the disc tray and its OPEN/CLOSE button, the ACCESS indicator and the controller port. At the rear are the expansion port, the channel 3/4 switch, RF, S-Video and composite video outputs, the left and right audio outputs and the mains lead. The AV expansion slot for the FMV cartridge is on the right side, under a cover. The controller has a headphone socket with its own volume control and an extension port for a second controller.[2]

  • Rear of an FZ-1
    Rear of an FZ-1
  • Panasonic's troubleshooting flowchart (service manual p. 2-12)
    Panasonic's troubleshooting flowchart (service manual p. 2-12)

Known faults

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  • The power-section capacitors fail. The 3DO Development Repo names C35 and C36 as the ones most often found leaking, and warns that leaked electrolyte damages the board traces around them. The glue around C1 looks like leakage but is not, although C1 also degrades.[12]
  • A console that restarts in a loop before showing a picture often has C1 leaking onto C36.[13]
  • The disc tray belt stretches, so the tray will not open, will not stay open or closes again by itself. The drive gear and the diode D11 beside the +9 V regulator are also listed as common failures.[12]
  • The regulators run very hot in normal use.[12]

Diagnosis and repair are on the Panasonic FZ-1 Troubleshooting Guide and the capacitor values on the Panasonic FZ-1 Capacitor Replacement Guide.

Documentation

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  • Panasonic FZ-1 Documentation: Panasonic's U.S. and Canada/U.K. service manuals, the technical guide, five service manual supplements, the European operating instructions and a community drawing of the power section.
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References

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  1. ↑ 1.0 1.1 1.2 1.3 3DO, Wikipedia—link(accessed 2026-10-01) Infobox and section "Variants". Used for release dates and launch prices only.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Matsushita Electric Industrial Co., Service Manual: 3DO Interactive Multiplayer FZ-1, order no. CPD9309012C0 (area [M], U.S.A.): specifications p. 1-1, controls pp. 1-2 to 1-3, disassembly pp. 2-2 to 2-11, troubleshooting flowchart p. 2-12, replacement parts list pp. 3-14 to 3-20. Hosted here as File:Panasonic FZ-1 Service Manual CPD9309012C0.pdf; see Panasonic FZ-1 Documentation.
  3. ↑ 3.0 3.1 3DO Model Differences, ConsoleMods Wiki, 8 May 2026—link(accessed 2026-10-01) Section "Panasonic FZ-1": matte-top and shiny-top revisions, their board numbers and cooling, and the fixed mains lead.
  4. ↑ Matsushita Electric Industrial Co., Service Manual: 3DO Interactive Multiplayer FZ-1, areas [C] Canada and [E] U.K., © 1994: specifications p. 1-1. Hosted here as File:Panasonic FZ-1 Service Manual Canada UK.pdf.
  5. ↑ 5.0 5.1 Panasonic 3DO FZ-1, Console5 TechWiki—link(accessed 2026-10-01) IC list for the 1993 main board, capacitor lists for main boards DFUP0576ZAM2/M3, DFUP0648ZA M and DFUP0649ZAM3 and for the CR-560-B drive board, and the list of Panasonic service documents. Secondary source.
  6. ↑ 6.0 6.1 Matsushita Electric Industrial Co., Service Manual Supplement: FZ-1 Main Logic Board and CD-ROM Drive, order no. CPD9311017S1: section 1 "Selection of Main Logic Board and CD-ROM Drive" p. 1, replacement parts list pp. 14–20. Hosted here as File:Panasonic FZ-1 Service Manual Supplement CPD9311017S1.pdf.
  7. ↑ 7.0 7.1 Matsushita Electric Industrial Co., Service Manual Supplement: FZ-1 Main Logic Board, order no. IMD9411005S1: cover note (effective serial number and major changes), IC terminal functions, replacement parts list. Hosted here as File:Panasonic FZ-1 Service Manual Supplement IMD9411005S1.pdf.
  8. ↑ Laser assemblies, 3DO Development Repo—link(accessed 2026-10-01) Table of the laser fitted to each 3DO model and the drives that share it.
  9. ↑ Matsushita Electric Industrial Co., Service Manual Supplement: FZ-1 Parts Changes and Corrections of Schematic Diagrams, order no. CPD9401004S1, p. 1. Hosted here as File:Panasonic FZ-1 Service Manual Supplement CPD9401004S1.pdf.
  10. ↑ Matsushita Electric Industrial Co., Service Manual Supplement: FZ-1 CD-ROM Drive Break down, order no. IMD9503003S0, p. 1. Hosted here as File:Panasonic FZ-1 Service Manual Supplement IMD9503003S0.pdf.
  11. ↑ Matsushita Electric Industrial Co. and The 3DO Company, Technical Guide: 3DO Interactive Multiplayer FZ-1, order no. CPD9310013G0: section 3-3 "Power Logic" pp. 3-8 to 3-12; section 5-1 flowcharts pp. 5-1 to 5-9. Hosted here as File:Panasonic FZ-1 Technical Guide CPD9310013G0.pdf.
  12. ↑ 12.0 12.1 12.2 General Hardware Repair and Maintenance, 3DO Development Repo, 7 November 2022—link(accessed 2026-10-01) Community repair notes: common failures by model and common symptoms.
  13. ↑ 3DO:General Troubleshooting, ConsoleMods Wiki, 10 May 2026—link(accessed 2026-10-01) Section "Reboot Loop".



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