Marantz SR5008 - Manual (Page 176)

176
Appendix Tips Playback Connections Contents
Front panel Display Rear panel Index Remote
Settings
Maintenance Mode
Use when receiving maintenance from a Marantz service engineer or
custom installer. Ordinarily, this mode isn’t suitable for use by the end user,
only by a trained service technician or custom installation professional.
NOTE
• Only use this function if so instructed by a Marantz serviceperson or installer.