Sony SRX-R320 Service Manual page 77

15. Clean the surfaces between Blue Pre-PBS and Main PBS carefully using cotton swab.
16. Clean the surfaces between Green Pre-PBS and Main PBS carefully using cotton swab.
17. Clean the surfaces between Red Pre-PBS and Main PBS carefully using cotton swab.
How to make a cleaning wiper
Fold the upper half of the croser into triangle, enfold the tip of the cotton swab and roll it up.
Put alcohol to the eight portions.
Croser
Main PBS
Main PBS
Wipe lightly
Clean the surfaces between each Pre-PBS and Main PBS by moving the cleaning wiper dampened with
alcohol back and forth while rotating it.
Wipe thoroughly
Wipe the surfaces between each Pre-PBS and Main PBS using the new cleaning wiper dampened with alcohol.
Repeat the cleaning procedure until no contamination is adhered to the cleaning wiper.
Lastly, wipe the surfaces using the new dry cleaning wiper (not dampened with alcohol).
18. After completing the cleaning of all R/G/B and assembling procedures, blow air to the Main PBS,
trimming fi lter and G dichroic mirror using the air blower.
SRX-R320
Cotton swab
Red Pre-PBS
Blue Pre-PBS
: Alcohol
PRD-001
Main PBS
Green Pre-PBS
1-69 (E)