Brand: SONY
Category: Audio
Document Type: Parts/Service
Language: EN
Parts/Service for DAV-DZ350/DZ650/DZ950
Uploaded: Nov. 21, 2025, 8:54 p.m.
Manual Publish Date: 2014-06-01
Warranty Information
Refer to the manual for specific warranty information related to parts and replacements.
For basic operation and troubleshooting, refer to the following sections:
- Servicing Notes: Handling the optical pick-up block, unleaded solder, and part repair.
- Test Mode: Procedures for version display and reset.
- Troubleshooting: Flowcharts for common issues like "PROTECT", "OVERLOAD", "REG ERR", and "LOCKED" displays.
- Disassembly: Step-by-step instructions for disassembling various components of the unit.
- Diagrams: Block diagrams, printed wiring boards, and schematic diagrams for internal components.
- Exploded Views: Illustrated breakdown of parts for different sections of the system.
- Electrical Parts List: A comprehensive list of replaceable parts with their part numbers and descriptions.
Troubleshooting and error codes
| Flow | Symptom | Action | Result | Next Step |
|---|---|---|---|---|
| 1. Mecha check flow | Tray opens and closes. | Check that the disc playback is possible. | OK | Check that the FFC1 is correctly inserted in CN100 on the MAIN board. |
| NG | Reinsert the FFC1. | Exchange the MAIN board. | ||
| Disc playback is possible. | Check that FFC1 is not disconnected. | OK | Check that the DVD IM LOADER (CMS-LS5FP) is normal. | |
| NG | Exchange the FFC1. Part No. 9-885-183-84 | |||
| DVD IM LOADER (CMS-LS5FP) is normal. | Check that the speakers are connected. | OK | Exchange the MAIN board. | |
| NG | Check the connection state of the speakers. | Exchange the MAIN board. | ||
| 2. Flow When "OVERLOAD" is Displayed | "OVERLOAD" is displayed on the fluorescent indicator tube. | After the internal USB wire of CN202 on the MAIN board is disconnected, check that the display disappears if the power is turned on again. | OK | Exchange the FUNCTION KEY board. Part No. 9-885-183-81 |
| NG | Exchange the MAIN board. | |||
| 3. Flow When "PROTECT" is Displayed | "PROTECT" is displayed on the fluorescent indicator tube. | Check that the speakers are connected. | OK | Exchange the MAIN board. |
| NG | Check the connection state of the speakers. | Exchange the MAIN board. | ||
| After the speakers are disconnected, check that the "PROTECT" is displayed on the fluorescent indicator tube. | Check that there is no heat damage in the appearance of IC501/IC502/IC503 on the MAIN board. | OK | Exchange the MAIN board. | |
| NG | Exchange the IC501/IC502/IC503. Part No. 9-885-183-86 | Exchange the MAIN board. | ||
| 4. Flow When "REG ERR" is Displayed | "REG ERR" is displayed on the fluorescent indicator tube. | Exchange the MAIN board. | ||
| 5. Flow When "LOCKED" is Displayed | "LOCKED" is displayed on the fluorescent indicator tube when the EJECT button on main unit. | Press the EJECT and STOP button on main unit five seconds or more simultaneously. | Check that "UNLOCKED" is displayed on the fluorescent indicator tube, after "PLEASE WAIT" is displayed. | |
| OK | Press the EJECT button on main unit, and check that the display on the fluorescent indicator tube is disappeared. | End | ||
| NG | Exchange the MAIN board. |