SONY WRR-805A
Service Manual

Parts Identification
B BATT (battery) indication Displays the status of the batteries of this unit. See �Battery indication� on page 10. C RF (radio frequency) indications The dot indications show the RF input level. Depending on the RF input level, the number of dots changes as below. Four dots on: more than 45 dBµ Three dots on: between 35 dBµ and 45 dBµ Two dots on: between 25 dBµ and 35 dBµ One dot on: between 15 dBµ and 25 dBµ No dot: less than 15 dBµ D GP/CH (group/channel) indication Shows the reception channel group and respective channel number. Each time you press the MODE button the group/channel indication changes to the frequency and accumulated time indications as shown below.
Group/channel indication Frequency indication

In Accumulated time indication, it displays the accumulated time of battery use (in one-minute increments). See �Settings" on page 11. 4 SET button Press to change and set the contents of the item on the display. See �Settings� on page 11. 5 MODE button Press to select the item to be set on the display. See �Settings� on page 11. 6 POWER switch Turns the power of the tuner ON or OFF. 7 RF (radio frequency) indicator Indicates the strength of the RF input signal. On in green: more than 25 dBµ On in red: between 15 dBµ and 25 dBµ Off: less than 15 dBµ (less than muting level) 8 TX BATT (transmitter battery) indicator Indicates the battery condition of the wireless microphone transmitter. The indicator starts flashing about one hour before the transmitter batteries go flat.

2 Match the polarities and insert the batteries. 3 Set the battery holder in the original position.
Battery indication When you turn the power on, the battery status of this unit appears in the BATT indication on the display section.
1 Lights BATT indication Battery condition Note Less than half-charge Almost exhausted Completely exhausted 2 Lights 3 Flashes 4 Goes off

Notes on batteries

� Use new alkaline batteries. � Do not pair different types of batteries. � Always replace the two batteries together. � The batteries are not rechargeable. � Be careful to install the batteries with the correct polarity. � When not using the tuner for a long period, remove the
batteries to avoid leakage. If the batteries do leak, clean all leakage from the battery holder case and the unit. Leakage left in the holder case and the unit may cause poor battery contact. If there seems to be poor battery contact, consult your Sony dealer.

Good

The indication may be incorrect if the batteries are not new when installed. If you plan to use the tuner for a long period, it is best to replace the batteries with new ones.

Accumulated time indication

8US

10US

Power Supply
9 MUTING switch Set to ON to eliminate the noise and signal interference when the tuner is in signal reception standby mode. See �Muting Functions� on page 14. 0 + (+ selection) / � (� selection/reset) buttons In setting mode, select the transmission channel, frequency and attenuator level using either of these buttons, or reset the time-of-use indication to �00:00� with the � button. See �Settings� on page 11. The tuner can operate on two LR6 (size AA) alkaline batteries continuously for about 6 hours at 25°C (77°F).

Settings
Wireless Channel Selection

2 Press the MODE button until the group name and channel
number appear on the display.

3 Press the SET button.
The tuner enters in group selection mode and the group name flashes on the GP section.
In group selection mode
RF TX BATT

3 , 5, 7 4, 6

Display example for U68 model

RF

AF

BATT

!¡ MONITOR control Turn to adjust the monitoring level through headphones.

2 1
Two LR6 (size AA) alkaline batteries
P W M O D R E

GP

CH

4 Press the + or � button to select the desired group.

Note

Noise may occur when the power is turned on or off. Be sure to turn down the input level of the connected equipment before operating the POWER switch. Installing the batteries

1 Set the POWER switch to ON.
The display shows the same status as before the tuner was last turned off. If the group name and channel number is shown on the display, skip step 2 and proceed with step 3.
US

1 Slide the battery-holder catches inward (in the direction
of the arrows b B) to take out the battery holder.

O R

Pressing the + button cyclically changes the group in the following order and pressing the � button changes it in the reverse order.

F S F E

O N O T

M

O

N

IT

1-3 WRR-805A (U)

If you hold the button down, the group will continuously change. When no button is pressed for more than 30 seconds, the

9

11US