====== Sony MDX-U1 ======

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First MD auto unit. There is also a MDX-U1RDS variant. Does not have an amplifier.

Features:
  * 4-mbit shock resistant memory
  * 1 bit DAC
  * Supports Sony Unilink control of CD/MD changers. 
  * Has RCA in and optical input through the use of a proprietary adapter.
  * 24 station presets (18 FM, 6 AM)
  * Intro scan function - plays the first 10 seconds of each track
  * Telephone mute function - decreasing the volume automatically during a telephone call
  * Detachable Front Panel

US, Canadian, Europe FM range: 87.9 - 107.9 MHz. AEP: 87.5 - 108.0 MHz

Wireless remote: RM-X27 (no known substitutions).

Optical Block: KMS-150A (Consistently printed KSM-150A in the operation manual)
ATRAC IC: CXD2527R

[[https://worldradiohistory.com/Archive-All-Audio/Archive-HiFI-Stereo/90s/Stereo-Review-1994-03.pdf| Ad on page130]] shows the MDX-U1 was still for sale in 03-1994
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Content adapted from: [[http://minidisc.org/part_Sony_MDX-U1.html | Minidisc.org page]]
[[https://www.sony.com/ja/SonyInfo/News/Press_Archive/200209/02-0902/| Mentioned in 2002 press release]]
{{:equipment:sony:deck:hfe_sony_mds-101_brochure_jp.pdf | Sony brochure (Japanese)}}
===== Manuals =====

{{ :equipment:sony:auto:mdx-u1_1_.pdf | MDX-U1 User manual (multi-language)}}

{{ :equipment:sony:auto:sony_mdx-u1_operation_manual.pdf | Sony MDX-U1 Operation Manual}} (something between a service manual and technical training manual)

{{ :equipment:sony:auto:sony_remote_guide_w0002411m.pdf | Sony Wireless Remote Guide}}

{{ :equipment:sony:auto:sony_mdx-u1_mdx-u1rds_service_manual.pdf | Sony MDX-U1 Service Manual}}
{{ :equipment:sony:auto:sony_mdx-u1_mdx-u1rds_service_manual_supplement_1.pdf | Supplement 1}}
{{ :equipment:sony:auto:sony_mdx-u1_mdx-u1rds_service_manual_supplement_2.pdf | Supplement 2}}
{{ :equipment:sony:auto:sony_mdx-u1_mdx-u1rds_service_manual_supplement_3.pdf | Supplement 3}}
{{ :equipment:sony:auto:sony_mdx-u1_mdx-u1rds_service_manual_correction_1.pdf | Correction 1}}

===== Repair =====

[[https://www.electronica-pt.com/reparacao.php?ref=MDXU1&marca=SONY&sintoma= | Link to troubleshooting various issues with this unit.]]

===== Photos =====

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Korean listing:\\
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Russian listing:\\
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{{:equipment:sony:auto:sony_mdx-u1_mg_mg.zip |Sony press image in avif}} 

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