Service manual

BEFORE USING THIS SERVICE MANUAL
This service manual covers the one-chip custom LSI (CPU+VDP+SCA).
The First Serial No. of 1 Chip Version Unit.
• AC 120V area • AC 230V/240V area
• 0201 76537-(For USA) • 020019501-
• 020168498-(For CANADA) • B30000001-
• B20135204- • K37000001-
• K201 17921-
• P31020001-
• P31000001-
• COMPARISON WITH ANOTHER MODEL
Electrical Components
COMPONENT GAME GEAR VAO
CPU
IC Z80A
VIDEO PROCESSOR IC
IC CUSTOM CHIP VDP GG
1/0, LCD CONTROL IC
IC CUSTOM CHIP SCA GG
MEMORY FOR CPU'S PROGRAM
IC UPD4364G-15L
MEMORY FOR VIDEO PROCESSOR IC IC HM65256BLFP-12
OPAMP
IC UPC358G2
DUAL SWITCHING REGULATOR
ICMB3775
DUAL LOW-VOLTAGE POWER AMP ICTDA2822M
·.,.
-2-
GAME GEAR VA1
IC CUSTOM CHIP GG
Same as on left
Same as on left
Same as on left
Same as on left
Same as on left