Editing Sega 32X Maintenance Guide (section)

== Power Supply & Voltage Checks ==

The 32X draws significant current for its dual SH2 processors and video circuits. Power instability is a common cause of failure.

=== Power Arrangement ===
* The 32X requires its own '''9V DC centre-negative power supply''' (same as Megadrive/Genesis Model 2).
* Both the Megadrive/Genesis and 32X must be powered simultaneously; do not “daisy-chain” a single PSU.

{| class="wikitable styled-table" style="width:70%;"
! Supply !! Voltage !! Polarity !! Current (min.)
|-
| 32X (Model 2) || 9V DC || Centre-negative || 850 mA
|-
| Megadrive/Genesis || 9V DC || Centre-negative || 1.2 A
|}

''Using under-rated or generic PSUs can cause video dropouts, audio noise, or boot failure.''

=== Voltage Check Procedure ===
# With both units powered, measure voltage at the 32X power input jack: should read '''8.7–9.3V DC''' under load.
# Check the internal 5V rail at the voltage regulator output (test point near the SH2 CPUs): should be '''4.95–5.15V DC'''.
# If voltage sags below 4.9V, replace the PSU or check for failing regulators/capacitors.