Pioneer DVR-210-S Manual page 30

TUNER u-CON etc.
* TUFL u-con
There are 2 types of TUFL u-con IC for DVR-310-S.
(1) Flash type (It is possible to update the firmware.) [Service mode: F]
(2) Mask type (Part number label on the IC)
TUFL u-con IC is easily damaged by electrostatic discharge.
* EEPROM (IC2251)
For backup Tuner data.(Pre-set CH, AFT ON/OFF, Skip CH etc.)
Information about timed recording
Other information (state of Volume, remote control mode and last Input positions (Line/
Tuner etc)
* Lithium battery
Life time of battery is approx. 5 years.
Power of RTC and Backup SRAM are supplied by Lithium battery when AC cord is
disconnected.
TUMJ ASSY
[Service mode: M]
29.