Game Boy -related schematics

Licensed under Creative Commons Attribution 4.0 International.

Exceptions:

• MGB-xCPU/MGB-LCPU-02.jpg: assumed to be in public domain based on the readme.txt file

Used libraries:

• gekkio-kicad-libs
• kicad-symbols

Game Boy Pocket mainboard (MGB-CPU-01, MGB-ECPU-01, MGB-LCPU-01, MGB-LCPU-02)

Traced based on high-res scans by Alex a.k.a. ArcadeTV.

Components were identified by desoldering and measuring everything on MGB-ECPU-01 and MGB-LCPU-01 boards.

Raw notes of MGB-ECPU-01 board components

Game Boy Light mainboard (MGL-CPU-01)

Components were identified by desoldering and measuring everything on an MGL-CPU-01 board.

Raw notes of MGL-CPU-01 board components

Game Boy Advance SP AGS-001 mainboard (AGS-CPU-11)

Components were identified by desoldering and measuring everything on a AGS-CPU-11 board.

Note: there are several versions of Advance SP mainboards, and these schematics have accurate information only for AGS-CPU-11

Raw notes of AGS-CPU-11 board components

Original Game Boy LCD board (DMG-LCD-06)

Components were identified by desoldering and measuring everything on a DMG-LCD-06 board.

Original Game Boy DC/DC power board (DC CONV DMG / DC CONV2 DMG)

Components were identified by desoldering and measuring everything on one board of each type (A/B/C/D).

There are several versions of the regulator board, but the board label is not enough to distinguish the different versions. gbhwdb uses unofficial type A1/A2/A3/B/C/D designation, which is also used here. Identify your board by looking at the following board version comparison photo:

Schematics:

• DC CONV DMG (type A / type B) schematics
• DC CONV DMG (type C) schematics
• DC CONV2 DMG (type D) schematics

Visual component references:

• DC CONV DMG (type A) visual component reference
• DC CONV DMG (type B) visual component reference
• DC CONV DMG (type C) visual component reference
• DC CONV2 DMG (type D) visual component reference

Known differences:

• A1 vs A2 vs A3: one trace is laid out slightly differently at the bottom of the board
• A vs B: exactly the same circuit, but the board layout has been redone and small components now come in MicroMELF packages (vs 0603 imperial)
• B vs C: almost exactly the same circuit, but the input filter no longer has an inductor, and many component values have been slightly changed. Schottky diode switched from surface-mount SOT-23 package to through-hole DO-34.
• C vs D: main circuit and components are identical, but an extra undervoltage lockout (UVLO) circuit has been added and board layout has been redone once again

Game Boy Pocket DC/DC power boards

Components were identified by desoldering and measuring everything on one board of each type (A/B).

Type A (LSEP01088A1)

There are actually at least three different variants of this board with some minor layout adjustments, but the same schematics apply to all of them.

• Schematics
• Visual component reference
• Raw notes of components

Type B

• Schematics
• Raw notes of components