Philips CDI 490
.jpg) | |
| Philips press photograph of the CDI 490, as published by ICDIA. Copyright Philips; used here to identify the product. | |
| Specifications | |
|---|---|
| Manufacturer | Philips |
| Type | CD-i player (mini-component size, for institutional and professional users) |
| CPU | Philips SCC68070[1] |
| Memory | 32 KB NVRAM: DS1216C SmartWatch socket with a 32 KB SRAM[2][3] |
| Storage | Compact disc, CDM 12.1 mechanism[2][4] |
| Display | Composite video; no RGB as built[5] |
| Sound | — |
| Power | Internal supply 20PS304, 100 to 240 V AC[6] |
| OS / Firmware | — |
| Model no. | CDI 490/00[2] |
The Philips CDI 490 is a CD-i player built as a better-equipped version of the Philips CDI 470. ICDIA describes it as aimed mainly at institutional and other professional users who needed more storage: it has 32 KB of NVRAM in place of the 470's 8 KB, and Digital Video built in as standard.[7] It uses the small-player version of Philips's Mono IV main board and the same 20PS304 supply as the 470.[4][6]
History
[edit | edit source]Wikipedia lists the 490 with the 450 and 470 as the 400 series, which it says was shown at the Consumer Electronics Show in Chicago in June 1994.[1] No Philips service manual or user manual for the CDI 490 has been found.
Specifications
[edit | edit source]ICDIA's comparison table sets the 490 against the two 470 versions:
| Version | Shell | Remote control | NVRAM | Digital Video | I/O | CDM | Board |
|---|---|---|---|---|---|---|---|
| CDI 470/00 | 2nd | RC6 | 8 KB | 22ER9956 cartridge (optional) | B | 12.1 | Mono IV |
| CDI 470/20 | 2nd | RC6 | 8 KB | Installed | B | 12.1 | Mono IV |
| CDI 490/00 | 2nd | RC6 | 32 KB | Installed | B | 12.1 | Mono IV |
Hardware
[edit | edit source]Retrostuff, a CD-i repair site, groups the 470 and 490 as the "Mono IV (small players)" board, with a BT9107 or BT9108 video encoder, a CDM 12.1 mechanism and the 20PS304 supply.[4] The same site says the small players share the Mono IV board design of the larger CDI 660/00, 220/80 and 210/60, with some components not fitted.[5] The CDI 470 service manual draws the NVRAM position as "8kx8 OR 32kx8", with resistors 3242, 3244 and 3270 fitted only for 32 KB.[8]
NVRAM
[edit | edit source]Where most 470s have an M48T08 timekeeper chip, the 490 has a Dallas DS1216C SmartWatch RAM socket with a 32 KB SRAM chip (for example a Mitsubishi M5M5256DP-70LL-I) plugged into it. The socket holds the clock and the batteries. Its clock is accurate to better than one minute a month at 25 °C and needs no calibration. Retrostuff warns that pulling the SRAM out of the socket deletes its contents at once, and that an 8 KB timekeeper must not be fitted in its place.[3] Care of the socket is on the maintenance page.
Digital Video
[edit | edit source]The Digital Video Cartridge is fitted inside the player. Retrostuff's CDI 490/00 had a 22ER9956/40, the later IMPEG version, which crashes version 1 of The 7th Guest at the cake puzzle. An older VMPEG cartridge (22ER9956/20 to /39) can be fitted instead, but only after moving a plastic holder out of the way, minding the power and CD cables.[9]
System ROM
[edit | edit source]| File | Revision | CRC32 | Found in |
|---|---|---|---|
| cdi490a17.rom | ID 77, R1.7 | 9A10DA73 | CDI 490/00 |
| cdi490a16.rom | ID 77, R1.6 | E115F45B | CDI 470/85; the same ROM as MAME's cdi490a.rom (CRC32 E2F200F6), which is stored big-endian |
| - | R1.2 | - | Early CDI 490; has the 16:9 option in the menu |
The 490 ROM detects whether 8 KB or 32 KB of NVRAM is fitted, which is why retrostuff recommends it for 470s upgraded to 32 KB.[11] It also contains the Service Shell module sv, which the CDI 660 and 670 ROMs lack; retrostuff used the 490's module to patch the Service Shell into a CDI 660.[12] The start-up message can be customised with the CDI 660/670 Key disc and PIN code 3094, which also works on the 490, but a keyboard on the 490 needs the 22ER9208 I/O port splitter.[4]
Video output
[edit | edit source]The 490 has no RGB output as built. Retrostuff's RGB SCART modification enables RGB on the video encoder with a 1 kΩ resistor, 3161, to +5 V, populates the missing video, audio and switching parts, and cuts a hole in the case for a SCART socket. The service manual's 820 Ω value for resistors 3162, 3163, 3182, 3183, 3189 and 3190 is wrong; the boards that have RGB use 510 Ω. The SCART switching voltage on pin 8 needs a +11 V rail, which the 20PS304 does not provide.[5]
Power supply
[edit | edit source]The 20PS304 is a two-part switch-mode supply: a small mains board with the inlet at the rear and a larger board with the power switch at the front. It accepts 100 to 240 V AC, gives +5 V and -5 V, and has one fuse, 1101 (T 1.0 A L 250 V). The -5 V rail is protected on the main panel by fuse 3255 at grid F1.[6][13]
Documentation
[edit | edit source]No CDI 490 manual has been found. The CDI 470 service manual covers the main board and supply the two players share; the 490's own NVRAM and Digital Video fitting are not in it.[8]
General maintenance
[edit | edit source]The parts that need attention are the SmartWatch NVRAM socket, the CDM 12.1 mechanism and the -5 V fuse 3255.[3][13] See Philips CDI 490 General Maintenance.
Troubleshooting
[edit | edit source]The 490 ROM includes the Service Shell.[12] See Philips CDI 490 Troubleshooting Guide.
Capacitor replacement
[edit | edit source]See Philips CDI 490 Capacitor Replacement Guide.
Related pages
[edit | edit source]- Philips CDI 490 General Maintenance
- Philips CDI 490 Troubleshooting Guide
- Philips CDI 490 Capacitor Replacement Guide
- Philips CDI 470, the same player with 8 KB NVRAM
- Philips CDI 470 Documentation
- Philips CDI 450, the top-loading player of the 400 series
References
[edit | edit source]- ↑ 1.0 1.1 Wikipedia, "CD-i" (retrieved 2026-10-20): infobox CPU Philips SCC68070; the 400 series (450, 470, 490) debuted at the Consumer Electronics Show in Chicago in June 1994.
- ↑ 2.0 2.1 2.2 2.3 The New International CD-i Association, "Comparison table of all Philips and Philips-build consumer CD-i players" (retrieved 2026-10-20): rows for CDI 470/00, 470/20 and 490/00 (shell, IR, NV-RAM, DVC, I/O, DO, CDM, PCB).
- ↑ 3.0 3.1 3.2 Retrostuff, "NVRAM+RTC Solutions for Philips CD-i Players", 2021, updated 2025 (retrieved 2026-10-20), section "32 KB (SmartWatch)": all CDI 490s have a DS1216C SmartWatch RAM socket with a 32 KB SRAM; clock accuracy better than ± 1 minute per month at 25 °C, no calibration needed; do not remove the SRAM or fit an 8 KB timekeeper.
- ↑ 4.0 4.1 4.2 4.3 Retrostuff, "Modifications for Philips CD-i Players" (retrieved 2026-10-20): section "Mono IV (small players)", found in all 470 and 490 consumer players, BT9107KPJ or BT9108KPJ encoder, CDM 12.1, PSU 20PS304; start-up message customisation with the CDI 660/670 Key disc and PIN code 3094, which works on the 490, where a keyboard needs the 22ER9208 I/O port splitter.
- ↑ 5.0 5.1 5.2 5.3 Retrostuff, "Philips CDI490 RGB SCART Modification", 2 October 2020 (retrieved 2026-10-20).
- ↑ 6.0 6.1 6.2 Retrostuff, "Philips CD-i Power Supply Units", 2024, updated 2026 (retrieved 2026-10-20), section 20PS304: the supply of the CDI 470 and 490.
- ↑ The New International CD-i Association, "Philips consumer CD-i players" (retrieved 2026-10-20): "The CDI 490 was a slighly more advanced version of the CDI 470. Targeted mainly at institutional and other professional areas, where more storage space was needed, this player featured 32 KB of NV-RAM. Furthermore, it included Digital Video by default."
- ↑ 8.0 8.1 Philips Service & Support, Philips Media Systems, Compact disc interactive player CDI 470/00/05/06 service manual, P.S. 0795, 4822 725 24768, section 7.5.3 circuit diagram of the µP part (PCS 85 622): NVRAM 7241 "8kx8 OR 32kx8", resistor 3241 for 8 KB only, 3242, 3244 and 3270 for 32 KB only. Hosted as File:Philips CDI 470 Service Manual.pdf.
- ↑ Retrostuff, "The 7th Guest CD-i DVC Compatibility / Cake Puzzle Bug", 12 February 2017, updated 2023 (retrieved 2026-10-20): 22ER9956/20 to /39 are VMPEG, /40 onwards IMPEG; photographs of a CDI490/00 with a 22ER9956/40 and with a 22ER9956/20.
- ↑ Retrostuff, "Philips CDI450 32 KB NVRAM Upgrade", 29 August 2021 (retrieved 2026-10-20): system ROM of a 490/00, cdi490a17.rom, ID 77, R1.7, CRC32 9A10DA73; system ROM of a 470/85, cdi490a16.rom, ID 77, R1.6, CRC32 E115F45B, the same 490 ROM as in MAME in big-endian format.
- ↑ 11.0 11.1 Retrostuff, "Philips CDI470 32 KB NVRAM Upgrade", 29 December 2019 (retrieved 2026-10-20): the CDI 490 ROM detects the NVRAM size automatically; the MAME CDI 490 ROM file has CRC-32 E2F200F6.
- ↑ 12.0 12.1 Retrostuff, "Philips CDI660 Service Shell", 14 March 2021 (retrieved 2026-10-20): the Service Shell module sv is in the 490 system ROM (cdi490a17.rom) and missing from the 660/670 ROM.
- ↑ 13.0 13.1 Retrostuff, "Philips CD-i Mono III / IV Fuses", 2021, updated 2024 (retrieved 2026-10-20): the -5 V fuse in grid square F1 on all Mono IV main boards.