Game Boy -related schematics

Licensed under Creative Commons Attribution 4.0 International.

Exceptions:

• DMG-CPU-06/DMG-CPU-06.jpg, 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

Quick links:

• Original Game Boy (DMG)
• Game Boy Pocket (MGB)
• Game Boy Light (MGL)
• Game Boy Advance SP AGS-001

Original Game Boy (DMG)

Mainboard (DMG-CPU-06)

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

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

Note: there are several versions of original Game Boy mainboards, and these schematics have accurate information only for DMG-CPU-06

LCD board (DMG-LCD-06)

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

Note: there are several versions of original Game Boy LCD boards, and these schematics have accurate information only for DMG-LCD-06

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

Headphone jack board (DMG JACK 01, DMG JACK 02, DMG JACK 03)

Components were identified by desoldering and measuring everything on one board of each type.

Original Game Boy headphone jack board schematics

Traced SVGs:

• DMG JACK 01 traced board SVG
• DMG JACK 02 traced board SVG
• DMG JACK 03 traced board SVG

Game Boy Pocket (MGB)

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

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

Game Boy Light (MGL)

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