Schematic Diagram; Printed Wiring Board - Sony TMR-RF940R Service Manual

1. MODIFICATION
• Countermeasure for distortion and white noise.
Improvement of TMR-RF940R (TX board) Increase the capacity
of C21.
Add a 22 µF or 47 µF electrolytic capacitor in parallel with C21.

SCHEMATIC DIAGRAM

• Original Service Manual page 7.
(Location E – G, 6 – 8)
!
: Added portion
[TX Board]

PRINTED WIRING BOARD

• Original Service Manual page 5 and 6.
(Location A – B, 4 – 6)
!
: Added portion
[TX Board] – Conductor Side –
$
@
You can use any of the following capacitors.
22 µF/4 V 1-124-430-∏ 1-126-263-∏
22 µF/6.3 V 1-115-863-∏ 1-123-618-∏ 1-124-222-∏ 1-126-153-∏
1-126-419-∏ 1-126-555-∏ 1-126-269-∏
22 µF/10 V 1-124-638-∏ 1-123-644-∏ 1-124-228-∏ 1-126-273-∏
1-126-427-∏ 1-126-783-∏ 1-128-054-∏
47 µF/4 V 1-107-294-∏ 1-126-265-∏ 1-126-553-∏ 1-126-779-∏
47 µF/6.3 V 1-123-293-∏ 1-123-647-∏ 1-124-224-∏ 1-126-154-∏
1-126-271-∏ 1-126-421-∏ 1-126-513-∏ 1-126-557-∏
47 µF/10 V 1-104-657-∏ 1-111-239-∏ 1-123-294-∏ 1-124-892-∏
1-126-640-∏ 1-126-744-∏ 1-126-785-∏
(Any capacitor can be used if its capacity is more than 22 µF and also
small enough for the case of this set.)
– 2 –
Part No.