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Sega Game Gear VA1 - User Manual

Sega Game Gear VA1
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SERVICE
MANUAL
GAME GEAR
VA1
NO.
004
ISSUED
DECEMBER,
1993
CONTENTS
1.
SPECIFICATIONS········································
3
2.
IDENTIFYING PARTS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 4
3.
DISASSEMBLY · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 5
4.
BLOCK DIAGRAM · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 7
5.
SCHEMA TIC DIAGRAMS · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 9
6.
CIRCUIT BOARD DIAGRAMS · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
15
7.
PARTS
SPECIFICATIONS································
19
8.
EXPLODED VIEW & PARTS LIST · · · · · · · · · · · · · · · · · · · · · · · ·
23
8-1. Exploded View· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
23
8-2. Mechanical Parts List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
25
8-3. Electrical Parts List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 26
8-4. Accessories/Package List · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
29
Sega Enterprises, Ltd.
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Summary

BEFORE USING THIS SERVICE MANUAL

COMPARISON WITH ANOTHER MODEL

Compares electrical components between Game Gear VA0 and VA1 models.

1. SPECIFICATIONS

2. IDENTIFYING PARTS

2-1. Front & Top Views of Console

Identifies front and top components of the Game Gear console.

2-2. Bottom View of Console

Details the components visible on the bottom of the Game Gear console.

2-3. Accessories

Lists and illustrates common accessories for the Game Gear.

3. DISASSEMBLY

3-1. Dismantling Procedure

Step-by-step guide for disassembling the Game Gear unit.

3-2. Reinstalling procedure

4. BLOCK DIAGRAM

5. SCHEMATIC DIAGRAMS

5-1. Main Circuit Board - Part 1

Schematic details for the first section of the main circuit board.

5-2. Main Circuit Board - Part 2

5-3. DC-DC Converter Circuit Board

5-4. Sound Circuit Board

6. CIRCUIT BOARD DIAGRAMS

6-1. Main Circuit Board (AC120 V area)

Top and bottom views of the AC120V main circuit board.

6-2. DC-DC Converter Circuit Board (AC120 V area)

Top and bottom views of the AC120V DC-DC converter board.

6-3. Sound Circuit Board (AC120 V area)

Top and bottom views of the AC120V sound circuit board.

6-4. Main Circuit Board (AC230 V;240 V area)

6-5. DC-DC Converter Circuit Board (AC230 V;240 V area)

6-6. Sound Circuit Board (AC230 V;240 V area)

7. PARTS SPECIFICATIONS

7-1. Main Circuit Board IC1 Custom Chip

Pinout and description for the main circuit board custom chip (GG QFP 144P).

IC2 HM65256 BLFP-12

IC3 µ PD4364 G-15 L IC MB8464 A-10 LL

IC4 Dual Operational Amplifier

7-3 Sound Circuit Board IC1 TDA2822 M

8. EXPLODED VIEW & PARTS LIST

8-1. Exploded View - Main Assembly

Exploded view diagram of the main Game Gear assembly.

8-1-2. Sub Assembly Exploded View

8-2. Mechanical Parts List

8-3. Electrical Parts List

8-3-3. Sound Circuit Board Parts

8-4. Accessories and Package List

Summary

BEFORE USING THIS SERVICE MANUAL

COMPARISON WITH ANOTHER MODEL

Compares electrical components between Game Gear VA0 and VA1 models.

1. SPECIFICATIONS

2. IDENTIFYING PARTS

2-1. Front & Top Views of Console

Identifies front and top components of the Game Gear console.

2-2. Bottom View of Console

Details the components visible on the bottom of the Game Gear console.

2-3. Accessories

Lists and illustrates common accessories for the Game Gear.

3. DISASSEMBLY

3-1. Dismantling Procedure

Step-by-step guide for disassembling the Game Gear unit.

3-2. Reinstalling procedure

4. BLOCK DIAGRAM

5. SCHEMATIC DIAGRAMS

5-1. Main Circuit Board - Part 1

Schematic details for the first section of the main circuit board.

5-2. Main Circuit Board - Part 2

5-3. DC-DC Converter Circuit Board

5-4. Sound Circuit Board

6. CIRCUIT BOARD DIAGRAMS

6-1. Main Circuit Board (AC120 V area)

Top and bottom views of the AC120V main circuit board.

6-2. DC-DC Converter Circuit Board (AC120 V area)

Top and bottom views of the AC120V DC-DC converter board.

6-3. Sound Circuit Board (AC120 V area)

Top and bottom views of the AC120V sound circuit board.

6-4. Main Circuit Board (AC230 V;240 V area)

6-5. DC-DC Converter Circuit Board (AC230 V;240 V area)

6-6. Sound Circuit Board (AC230 V;240 V area)

7. PARTS SPECIFICATIONS

7-1. Main Circuit Board IC1 Custom Chip

Pinout and description for the main circuit board custom chip (GG QFP 144P).

IC2 HM65256 BLFP-12

IC3 µ PD4364 G-15 L IC MB8464 A-10 LL

IC4 Dual Operational Amplifier

7-3 Sound Circuit Board IC1 TDA2822 M

8. EXPLODED VIEW & PARTS LIST

8-1. Exploded View - Main Assembly

Exploded view diagram of the main Game Gear assembly.

8-1-2. Sub Assembly Exploded View

8-2. Mechanical Parts List

8-3. Electrical Parts List

8-3-3. Sound Circuit Board Parts

8-4. Accessories and Package List

Sega Game Gear VA1 Specifications

General IconGeneral
ManufacturerSega
TypeHandheld game console
GenerationFourth generation
Lifespan1990-1997
Discontinued1997
CPUZilog Z80 @ 3.58 MHz
RAM8 KB
VRAM16 KB
SoundMono
Battery life3-5 hours
Release dateOctober 6, 1990
MediaGame cartridge
Display3.2 inch LCD
Power6 AA batteries or AC adapter
Dimensions210 mm x 113 mm x 38 mm
Weight400 g
Units sold10.62 million

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