Read Sony MHC-V5 (serv.man3) Service Manual online
28
4-3. Check point in D-AMP board
Repair tips:
After removing speaker cables,
compare the resistance between
each connector terminals to check
each amplifier circuit condition.
After removing speaker cables,
compare the resistance between
each connector terminals to check
each amplifier circuit condition.
Approx. 10k-30k ohm => OK
As the resistance increases while
checking, measure it soon.
If short circuit or special high
resistance is found, the applicable
signal line’s circuit may be damaged.
(Booster, AUDIO AMP, etc.)
checking, measure it soon.
If short circuit or special high
resistance is found, the applicable
signal line’s circuit may be damaged.
(Booster, AUDIO AMP, etc.)
SW (1 & 2pin)
Pin3 is open.
Pin3 is open.
FR
FL
PRE AMP
AUDIO AMP
Booster
+5/-5V REG
Repair tips:
When AMP circuit is damaged,
AUDIO AMP or booster may be
broken in only one signal line.
So, compare each signal line
resistance to check the condition.
If signal lines’ resistances are similar,
check Regulators for AMP circuit.
When AMP circuit is damaged,
AUDIO AMP or booster may be
broken in only one signal line.
So, compare each signal line
resistance to check the condition.
If signal lines’ resistances are similar,
check Regulators for AMP circuit.
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