Jump to content

Nintendo Famicom Service Manual

From RetroTechCollection

The Famicom · Super Famicom · Game Boy Service Manual (ファミコン・スーパーファミコン・ゲームボーイ サービスマニュアル) is a Japanese repair manual published by Nintendo Co., Ltd., dated 7 August 1992 (平成4年8月7日発行) on its back cover. It has 22 numbered pages and covers three machines, which the cover names by their model prefixes: the Famicom (HVC), the Super Famicom (SHVC) and the Game Boy (DMG). It was written for repair at dealer level and contains exploded views, assembly cautions, voltage checks and price lists for replacement parts. It has no schematics.

The scan is 12 A3 PDF pages, two printed pages to a sheet, with no text layer. The PDF metadata records a Ricoh MP C2003 copier and a date of 2 June 2020; who made the scan is not recorded. The Game Boy section is also described on Nintendo Game Boy Service Manual (Japanese).

Contents

[edit | edit source]

Nintendo's contents page (目次):

Contents
Section Printed pages PDF pages
1. LSI、IC の取扱上のご注意 (handling LSIs and ICs) 1 2
2. HVC (Famicom) 2–10 2–6
3. SHVC (Super Famicom) 11–15 7–9
4. DMG (Game Boy) 16–20 9–11
5. 請求金額 計算方法 (working out the repair charge) 21 12
6. スーパーファミコン・ゲームボーイ・ファミコン 治工具セット (tool and jig set) 22 12

Handling LSIs and ICs (p. 1)

[edit | edit source]

Eleven numbered precautions. Earth yourself through a resistance of several MΩ, avoid clothing and gloves of static-prone synthetic fibre in favour of cotton, and lay LSIs on an earthed aluminium plate or conductive foam. Use an earthed soldering iron that does not leak: the gate protection diodes can absorb a small leakage, but a heavy one destroys them. Store LSIs at −20 to +70 °C and ICs at −40 to +125 °C. Switch the power off before removing a chip. Do not check continuity on a meter's high-resistance range, which applies 4.5 to 22.5 V and can destroy the device.

Famicom (HVC), pp. 2–10

[edit | edit source]
  • p. 2: a system diagram of the aerial, 75/300 Ω converter, RF switch, AC adapter, RF modulator, power section, 60-pin card connector, CPU board and both controllers, with the symptoms each part produces when it fails. The adapter is marked DC 10 V and should read DC 13.5 ± 1.5 V with no load. A dirty cartridge edge gives the same symptoms as a bad card connector, so the manual says to check with another cartridge first.
  • p. 3: "before deciding it is a fault" (故障と考える前に), a table of picture and sound problems caused by TV tuning, the TV/GAME switch or the aerial wiring.
  • p. 4: controller faults and replacement. Most failures are in controller I: worn A and B buttons and wires broken inside the cord. The controllers plug into connectors on the board and are prised off with a flat-blade screwdriver.
  • p. 5: the RF switch. Its circuit board needs test equipment and is not repaired; only the 3C2V and 2C2V coaxial cables, the housing and the labels are replaced. Tools: a 2 mm driver (a small flat-blade screwdriver will do), a leak-free or IC-rated iron of about 40 W, and tweezers or pliers.
  • p. 6: a picture that cuts out when the adapter plug is moved is cracked solder at the DC jack, from the cord being pulled sideways; the manual marks three points to resolder. Voltage checks: the RF switch terminal carries DC +5 V in game mode, and the adapter gives DC 13.5 ± 1.5 V off load. Two power-circuit sketches follow, for the HVC and for the HVC (VCCI) version, each with a 7805 taking 13–14 V in and giving 5 V out; the VCCI version adds a choke and a fuse.
  • p. 7: exploded view of the console. Tools: Phillips No. 2 driver, long-nose pliers, tweezers, a leak-free or IC-rated iron of about 30 W, and a solder sucker.
  • pp. 8–9: exploded views of controller I and controller II, each in the square-button and round-button versions. Tools: Phillips No. 0–1 driver and a 30 W iron.
  • p. 10: repair price list of 41 parts, with the part price and labour charge in yen. It includes the 60-pin card connector, 15-pin D-sub jack, crystal, RF modulator unit, DC jack, 7805 regulator, VCCI fuse, condenser microphone, the 4021 and 4069 CMOS ICs, and the 2C2V and 3C2V coaxial cables. Nintendo did not sell parts separately; the CPU board was supplied as an exchange assembly.

Super Famicom (SHVC), pp. 11–15

[edit | edit source]
  • pp. 11–12: repair notes. The power switch is polarised to extend contact life: solder the red harness wire to the + side and the black to the − side. Fix the ferrite core under the front unit's connector with double-sided foam, and pass the FFC harness from the front unit to the CPU board through it, with the unprinted side (not the blue-printed side) as the contact face. Fit the cassette cover spring the way round shown.
  • p. 12: the power circuit. Input passes through a choke, a fuse and a series diode to a reservoir capacitor and the power switch, then a 7805 regulator takes 13–14 V in and gives 5 V out, with the power LED on the 5 V side.
  • p. 13: exploded view of the console.
  • p. 14: exploded view of the controller.
  • p. 15: repair price list of 39 parts, including the CPU board and sound module (each also priced for an IC fault), RF modulator, 7805 regulator, crystal, a 1.5 A fuse (SSTR), the upper and lower 62-pin card connectors, the front unit and the 7-pin controller cord.

Game Boy (DMG), pp. 16–20

[edit | edit source]
  • p. 16: the boards and their names: the DC-DC converter board, which makes the voltages for the LSI and the LCD; the small jack board, which switches between speaker and headphones; the CPU board with its 32-pin cartridge connector; the LCD board; joiner wires 4C-49L, 4C-64L and 21C-63L; lead 42L-Y; and the 8 Ω speaker S-2903.
  • p. 17: wire routing. 4C-49L runs between the boss and the wall, 4C-64L must not ride over the rib, and 42L-Y must not ride over the speaker magnet boss. After 21C-63L is plugged into the 21-pin FF connector it must be folded as drawn; otherwise the insulating sheet shifts and component legs can pierce the joiner and short it.
  • p. 18: the small jack board (align the white wire with the ▲ mark; an electrolytic fitted the wrong way round still passes the inspection test, so check polarity by eye); replacing the DC-DC converter (the 4C-49L wires, red at the mark, run +, −, G, VCC on the solder side); and the DMG power circuit, which gives the converter outputs as +4.5 to +5.5 V and −15 to −21 V.
  • p. 19: exploded view, with the position of the dust gasket round the screen.
  • p. 20: repair price list of 27 parts, including the LCD, DC-DC converter, crystal, the potentiometers (printed as a dual 10 kΩ for contrast and a single 300 kΩ for volume, the reverse of the Nintendo Game Boy Technical Manual, which has a dual 10 kΩ volume control and a 30 kΩ contrast control), the speaker and the DMG-02 stereo headphones. Below it, the cleaning method: wipe the contacts regularly with a cotton bud moistened with a commercial AV head-cleaning fluid.

Charges and tools (pp. 21–22)

[edit | edit source]
  • p. 21: how to work out a repair bill: parts at list price plus only the highest labour charge among the repairs done, with consumption tax and postage extra; a repair cured by cleaning alone is charged ¥500–1,000. A table sorts repairs into three ranks by the tools they need: A (screwdriver only: housings, rubber contacts, controller assemblies), B (adds a soldering iron and a hand desoldering pump: switches, regulator, RF modulator, crystal, DC jack, speaker, DC-DC converter) and C (an electric desoldering tool: card connectors, ICs, the VCCI RF modulator, the Game Boy potentiometers and 32-pin connector). LSIs and other special parts are excluded.
  • p. 22: Nintendo's 28-item repair tool set, ¥32,000 before tax. It includes driver bits for each machine (among them a 2 mm Y bit for the Game Boy, and LH bits for the Super Famicom and for its cassettes and Game Boy cartridges), controller test cartridges for all three machines, cleaning kits, a conductive mat and wrist strap. A repair bench is offered at ¥100,000.

What this manual does not contain

[edit | edit source]
  • No board schematics. The only circuit drawings are the four power-supply sketches: HVC and HVC (VCCI) on p. 6, SHVC on p. 12 and DMG on p. 18.
  • No component-level parts list. The price lists name replaceable assemblies and a few parts (7805, fuses, 4021 and 4069, potentiometers), but there are no capacitor or resistor values and no board designators.
  • No component location maps.
  • Nothing on the NES, the SNES, the Famicom Disk System, the Game Boy Pocket or Color, or any PAL machine.
  • Japanese only, with no text layer.

Pages that cite this document

[edit | edit source]

Download: Nintendo Famicom Service Manual.pdf

Retrieved from "https://retrotechwiki.com/index.php?title=Nintendo_Famicom_Service_Manual&oldid=20291"