Marantz SR5012 Service Manual page 107

3-5. Error Code H1-14 failure detection procedure
Checking device. [U1028, U1029 : A3R12E40DBF-8E]
Check item(26).
Check soldering of IP SCALER [U1026], DDR2 [U1028/U1029] and its peripheral circuits.
Check soldering of the resistors [R1688/1689/1692/1695 to 1700/1703 to
DDR2.
If there is no problem with soldering, [U1026/U1028/U1029] is defective. Replace their IC. Or replace
the substrate.
3-6. Error Code H1-15 failure detection procedure
Checking device.
Check item(27).
Write to the GUI ROM.
1711] between IP SCALER and
Recheck from
Does Error Code H1-15 continue?
Check item(28).
Replace [U1029] with a new device.
Recheck from
Does Error Code H1-15 continue?
Go to check item (21)
107
[U1027 : W25Q128JVFIQ]
check item (1)
YES
check item (1)
YES
Recheck from
NO
NO
check item (2).