Sony TC-766-2 Service Manual page 13

TC-766-2
B+ Voltage Adjustment Tape Speed Adjustment
Adjustment Location: Procedure:
— function button board — Mode: _ playback
speed checker
FM-30
or
digital frequency
test tape counter
SPC-47
(4kHz, OdB)
Use a non-metaric screwdriver. Adjust RV901
(38 cm/s) and RV902 (19 cm/s) for 0% checker
or 8,000 Hz (38 cm/s) and 4,000 Hz (19 cm/s) 7
counter readings.
Specification:
7,940—8 060 Hz (38 cm/s)
+
SOoe 3,970—4,030 Hz (19 cm/s)
Frequency difference between beginning and
end of tape:
38 cm/s: within 0.5% or 40 Hz
19cm/s: within 0.5% or 20Hz
Adjustment Location:
left side
eo right side
2
Co
RV901 (38 cm/s)
RV902 (19cm/s)