Marantz DV4400, Service Manual

Page: 32 / 77

1-6-10 E57M2TR
Are the analog audio signals outputted to each pin
of IC7301, IC7401 and IC7501?
IC7301 1,7PIN FRONT(L/R)
IC7401 1,7PIN SORROUND(L/R)
IC7501 1,7PIN CENTER/SUBWOOFER
SORROUND(L)
→
CN7102 19PIN, IC7202 14PIN
SORROUND(R)
→
CN7102 19PIN, IC7202 13PIN
CENTER
→
CN7102 19PIN, IC7203 14PIN
SUBWOOFER
→
CN7102 19PIN, IC7203 13PIN
Do the mute signals of each line (as shown below)
become to "H" level?
FRONT(L)
→
CN7102 18PIN, IC7201 14PIN
FRONT(R)
→
CN7102 18PIN, IC7201 13PIN
Is the analog audio signal of each line outputted to
each terminal of JK7101 (as shown below) ?
IC7301 1PIN
→
JK7101 FRONT(L)
IC7301 7PIN
→
JK7101 FRONT(R)
IC7401 1PIN
→
JK7101 SORROUND(L)
IC7401 7PIN
→
JK7101 SORROUND(R)
IC7501 1PIN
→
JK7101 CENTER
IC7501 7PIN
→
JK7101 SUBWOOFER
Yes
Yes
No
No
No
No
No
Replace the DVD Main CBA Unit or IC7203.
Check each line between each pins of ICs and
JK7101, and service it if defective.
Replace the DVD Main CBA Unit or IC7202.
Replace the DVD Main CBA Unit or IC7201.
Replace ICs (IC7301, IC7401 or IC7501).
Yes
A