JVC RC-XC3BK

RC — XC3BK B/E/EN/G/GI
@ Tracking section
Does a tracking error signal
appear at TP503 when the disc
N Check the circuitry in the vicinity OK ; ; :
VINA ---- T ei t+——+| of (0501 i. 3 and @.@. The pickup or C501 is defective.
starts to ST
Check
the
offset
of
the
tracking
NG
;
error
of
TP503.
(iene
Adjust
VR501.
Is TP504's waveform of the
tracking loop ON?
Check the circuitry in the
vicinity of 1C501 40 ~ @ and
IC601 @~@.
IC601 is defective.
Check the circuitry in the
vicinity of IC502 ) ~ @
and IC501 @~ @.
Is the lens moved vertically when
the IC601 @ and 63 are
short-circuited?
ey Y
| IC601 is defective. Check the pickup and IC502 or IC501 is defective.
connections.
Fig. 7-7
Is 0.4V produced when CN501
® and 4 are short-circuited?
(No. 1991) 53