Headphone Dc Offset Adjustment; Dc Offset Adjustment - Yamaha AS2000BL Service Manual

A-S2000
G Headphone DC Offset Adjustment
Condition
• Start adjustment 5 sec or more after the power is
turned on.
• No input signal.
• Non loaded condition

DC offset adjustment

Adjust VR202 (Lch)/VR102 (Rch) so that the DC volt-
age of the CB504 becomes -2.0 to +2.0mV. (Fig. 2)
MAIN (2) P.C.B.
(Side A)
L ch
VR202 VR202
FRONT (2) P.C.B. (Side A)
20
MAIN (1) P.C.B.
(Side A)
R ch
VR102 VR102
Front side
PHONES
R ch L ch
DC -2.0 to +2.0 mV
MAIN (1) P.C.B. L ch
VR202
FRONT (2) P.C.B.
PHONES
Fig. 2
MAIN (2) P.C.B. R ch
VR102
L ch
DC -2.0 to +2.0 mV
R ch