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General| Brand | Sony |
|---|---|
| Model | HCD-D90AV |
| Category | Stereo System |
| Language | English |
Methods for measuring AC leakage current and relevant safety limits.
Cautions for chip replacement, circuit board repair, and laser radiation.
Step-by-step instructions for disassembling the loading and front panels.
Disassembly steps for TC mechanism, deco board, HP/MIC, display, and TC SW boards.
MC Cold/Hot Reset, CD Delivery, Sled Servo, and Key Check modes.
Operating procedures for aging mode in the CD section.
Operating procedures for aging mode in the tape deck section.
Procedure to adjust tape speed for Deck A using test mode.
Procedure to adjust playback levels for both decks.
Procedure for adjusting record bias for Deck B.
Procedure for adjusting record level for Deck B.
Procedure to adjust AM tuned level using SSG.
Procedure to adjust FM tuned level using SSG.
Procedure to check and confirm S-curve waveform symmetry and level.
Procedures for checking E-F balance and RF signal level.
Layout of the printed wiring board for the CD section (Side A and B).
Detailed schematic diagram for the CD section circuitry.
Layout of the printed wiring board for the tuner section (European models).
Schematic diagram for the tuner section of East European and CIS models.
Schematic diagram for the tuner section of European models.
Layout of the printed wiring board for the tuner section (East European/CIS).
