Pioneer DVR-560H-S, Service Manual

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1.3 NOTES ON REPLACEMENT OF THE SDRAM
Note when replacin g the SDRAM
When replacement of the SDRAM (IC1201 or IC1221) on the MAI N Assy is required, identify the manufacturer of the SDRAM.
If the SDRAM that needs replacement was manufactured b y ELPIDA, b oth IC1201 and IC1221 must b e replaced at the same
time.
SDRAMs for service are manufactured
b y SAMSU N G.
How to identify the manufacturer
Confirm the name of the manufacturer stamped on the surface of the part.
Measures to be taken
1. If the SDRAM that needs replacement was manufactured b y ELPIDA:
Replace b oth IC1201 and IC1221 at the same time.
2. If the SDRAM that needs replacement was manufactured b y SAMSU N G:
Replacement of only the defective SDRAM (IC1201 or IC1221) is possi b le.
Possible malfunctions
If SDRAMs made b y different manufacturers are mounted on the MAI N Assy, the following malfunctions may occur:
1. The power does not come on.
2. High-speed du
bb ing disa b led
3. Other malfunctions related to the SDRAM
By ELPIDA (replacement of b oth SDRAMs required) By SAMSU N G (replacement of only the defective SDRAM possi b le)