This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service
procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users, and have therefore not been restated.
WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personal injury, destruc-
tion of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha
product owners that all service required should be performed by an authorized Yamaha Retailer or the appointed service representative.
IMPORTANT: This presentation or sale of this manual to any individual or firm does not constitute authorization, certification, recognition of
any applicable technical capabilities, or establish a principal-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes in specification are
subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributor’s Service Division.
WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulated by
grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
WARNING: This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO
EVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux
vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.
IMPORTANT NOTICE FOR THE UNITED KINGDOM
Connecting the Plug and Cord
WARNING: THIS APPARATUS MUST BE EARTHED
IMPORTANT. The wires in this mains lead are coloured in accordance with the following code:
GREEN-AND-YELLOW: EARTH
BLUE: NEUTRAL
BROWN: LIVE
As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your
plug, proceed as follows:
The wire which is coloured GREEN and YELLOW must be connected to the terminal in the plug which is marked by the letter E or by the safety
earth symbol
The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.
or colored GREEN or colored GREEN and YELLOW.
WARNING
■
Components having special characteristics are marked and must be replaced with parts having specification equal to those originally
installed.
• Some component parts on the INPUT POWER circuit
board and POWER circuit boards maintain a high
voltage even when the power is switched off.
For this reason to avoid an electrical shock, do not touch
the upper metallic part of the following capacitors until
the remaining voltage has discharged.
[Discharging Method]
Before starting the service work, connect discharging
resistors (220 ohms 10W) to the terminals indicated in
the figure below to discharge electricity. (13 points)
The required discharging time is about 10 seconds per
each. Check that the DC voltage between the terminals
measures close to 0 (zero) volts using a multi-meter to
make sure that the discharge is completed.
[76A]: BIND HEAD TAPPING SCREW-B 3.0x16 NI-BL (WT892700)
[76B]: BIND HEAD TAPPING SCREW-B 3.0x16 NI-BL (WT892700)
[76C]: BIND HEAD TAPPING SCREW-B 3.0x16 NI-BL (WT892700)
[76D]: BIND HEAD TAPPING SCREW-B 3.0x16 NI-BL (WT892700)
Spacers
スペーサー
[76D]
POWER
B タイト+ BIND
B タイト+ BIND
B タイト+ BIND
B タイト+ BIND
(CH E–F)
POWER
(CH G–H)
Fig. 3
(図 3)
13
IPA8200
4. MOTHER A-D circuit board
(Time required: about 8 minutes)
4-1. Remove the top cover. (See procedure 1.)
4-2. Remove the AMP circuit boards (channel A, B, C, D).
(See procedure 2.)
4-3. Remove the POWER circuit boards (channel A-B,
C-D). (See procedure 3.)
4-4. Remove the screw marked [72A] and the insulation
sheet F. (Fig. 4)
4-5. Remove the screw marked [62B] and the bracket clip.
The MOTHER A-D circuit board can then be removed.
(Fig. 4)
Note: The four (4) PWB spacers are not component
parts of the MOTHER A-D circuit board. When
replacing the MOTHER A-D circuit board, remove
them from old circuit board and install them to
new circuit board.
[62B]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
[72A]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
MOTHER A–D
B タイト+ BIND
B タイト+ BIND
14
Fig. 4
(図 4)
IPA8200
5. MOTHER E-H circuit board
(Time required: about 8 minutes)
5-1. Remove the top cover. (See procedure 1.)
5-2. Remove the AMP circuit boards (channel E, F, G, H).
(See procedure 2.)
5-3. Remove the POWER circuit boards (channel E-F,
G-H). (See procedure 3.)
5-4. Remove the screw marked [72B] and the insulation
sheet E. (Fig. 5)
5-5. Remove the two (2) screws marked [62C] and the two
(2) bracket clips. The MOTHER E-H circuit board can
then be removed. (Fig. 5)
Note: The four (4) PWB spacers are not component
parts of the MOTHER E-H circuit board. When
replacing the MOTHER E-H circuit board, remove
them from old circuit board and install them to
new circuit board.
[62C]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
[72B]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
Fig. 5
(図 5)
MOTHER E–H
B タイト+ BIND
B タイト+ BIND
15
IPA8200
6. INPUT POWER Circuit Board
(Time required: about 9 minutes)
6-1. Remove the top cover. (See procedure 1.)
6-2. Remove all the POWER circuit boards.
(See procedure 3.)
6-3. Remove the screw marked [72A] and the insulation
sheet F. (Fig. 6)
6-4. Remove the screw marked [72B] and the insulation
sheet E. (Fig. 6)
6-5. Remove the two (2) screws marked [43]. (Fig. 6)
6-6. Disconnect all the connector assemblies from the
INPUT POWER circuit board. The INPUT POWER
circuit board can then be removed. (Fig. 6)
Note: The eight (8) PWB spacers are not component
parts of the INPUT POWER circuit board. When
replacing the INPUT POWER circuit board, remove
them from old circuit board and install them to
new circuit board.
Insulation sheet F
絶縁シートF
Connector assembly
束線
[72A]
6.INPUTPOWER シート
(所要時間:約 9 分)
6-1. トップカバーを外します。(1 項参照)
6-2. すべての POWER シートを外します。(3 項参照)
6-3. [72A]のネジ、絶縁シート F を外します。(図 6)
6-4. [72B]のネジ、絶縁シート E を外します。(図 6)
6-5. [43]のネジ 2 本を外します。(図 6)
6-6. INPUTPOWER シートからすべての束線を外し、
[43]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
[72A]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
[72B]: BIND HEAD TAPPING SCREW-B 3x8 MFZN2BL (WS522000)
Fig. 6
(図 6)
B タイト+ BIND
B タイト+ BIND
B タイト+ BIND
IPA8200
7. REAR Circuit Board
(Time required: about 5 minutes)
7-1. Remove the top cover. (See procedure 1.)
7-2. Remove the eight (8) screws marked [25] and the four
(4) screws marked [24]. (Fig. 7)
7-3. Disconnect all the connector assemblies from the
REAR circuit board. The REAR circuit board can
then be removed together with the four (4) hexagonal
spacers and four (4) screws. (Fig. 7)
Note: The four (4) hexagonal spacers and four (4)
screws are not component parts of the REAR
circuit board. When replacing the REAR circuit
board, remove them from old circuit board and
install them to new circuit board.
[24]: BIND HEAD SCREW 3x6 MFZN2B3 (WS522500)
[25]: PAN HEAD SCREW M2.6x6 NI-BL (WS522400)
Fig. 7
(図 7)
小ネジ+ BIND
小ネジ+ PAN
17
IPA8200
8. CONNECTOR Circuit Board
(Time required: about 13 minutes)
8-1. Remove the top cover. (See procedure 1.)
8-2. Remove all the POWER circuit boards.
(See procedure 3.)
8-3. Remove the INPUT POWER circuit board.
(See procedure 6.)
8-4. Remove the REAR circuit board. (See procedure 7.)
8-5. Remove the two (2) screws marked [13]. (Fig. 8)
8-6. Disconnect the connector assemblies from the
CONNECTOR circuit board. The CONNECTOR circuit
board can then be removed together with the two (2)
bracket terminals and two (2) screws. (Fig. 8)
Note: The two (2) bracket terminals and two (2) screws
are not component parts of the CONNECTOR
circuit board. When replacing the CONNECTOR
circuit board, remove them from old circuit board
and install them to new circuit board.
9. AC Inlet Assembly
(Time required: about 6 minutes)
9-1. Remove the top cover. (See procedure 1.)
9-2. Remove the AMP circuit board (channel D).
(See procedure 2.)
9-3. Remove the screw marked [15], and remove the lug
terminal of the AC inlet assembly and the toothed lock
washer. (Fig. 8)
9-4. Disconnect the AC inlet connector assembly connector
from the INPUT POWER circuit board. (Fig. 8)
9-5. Release the two (2) hooks of the AC inlet. The AC inlet