Yamaha Ysp1 Service Manual

							SERVICE  MANUAL
DIGITAL SOUND PROJECTOR
YSP-1

CONTENTS
TO SERVICE PERSONNEL .......................................... 2
FRONT PANEL .............................................................. 3
REAR PANELS .............................................................. 3
REMOTE CONTROL PANELS ...................................... 4
SPECIFICATIONS / 
						

							YSP-1
2
YSP-1
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD.  In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and
possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA-
SON WHATSOEVER!
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.
WALL
OUTLETEQUIPMENT
UNDER TESTAC LEAKAGE
TESTER OR
EQUIVALENT
INSULATING
TABLE
TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked s
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
Meter impedance should be equivalent to 1500 ohms
shunted by 0.15µF.Leakage current must not exceed 0.5mA.
Be sure to test for leakage with the AC plug in both polarities.
About Lead Free Solder / ÁËï¼tmMo
Side A
Side BSMT       REFLOW       Process
MI       
FLOW       Process Solder Dip
ÁËï¼txMXmTw	¨UK“‡bUz	.gÌtx

						

							YSP-1
3
YSP-1
■FRONT PANEL
BOTTOM VIEW
■REAR PANELS
U, C models T model
K model
B, G models L model
J model
R model
A model
J model only 
						

							YSP-1
4
YSP-1
REMOTE CONTROL PANELS
SPECIFICATIONS / 
						

							YSP-1
5

INTERNAL VIEW
3
4
6
71 DRIVER, WOOFER
2 DRIVER, TWEETER
3 INPUT (3) P.C.B.
4 INPUT (4) P.C.B. 
5 AMP P.C.B.
6 INPUT (2) P.C.B.
7 DSP P.C.B. 
8 
SWITCHING POWER SUPPLY UNIT
9 INPUT (5) P.C.B.
4 INPUT (1) P.C.B.  FRONT VIEW
REAR VIEW
REAR UNIT2
2
1
1
58
9
0
5
• DIMENSIONS


GO
$
118 (4-11/16) 194 (7-5/8)
1030 (40-9/16)
Unit : mm (inch)
o
						

							YSP-1
6

SET MENU TABLE / ·¿ÄÝÇá”
*1... Distance between this unit and floor. / Š;q	šqw‘m
*2... Distance in the lateral direction of the room (length of the wall on the left side of the user) / 
æ0w#M²w‘m
	┲”w(w‘m

*3... Distance in the longitudinal direction of the room (length of the wall on the right side of the user) / 
æ0w	NM²w‘m
	
						

							YSP-1
7
YSP-1
1
1
1
1 2
Top Panel
Ä¿ÓÍÉç Top Panel
Ä¿ÓÍÉç
Plate/ Top
Óè”Ä—Ä¿Ó
Fig. 1
1. Removal of Top Panels and Plate/Top
a. Remove 8 screws (1). (Fig. 1)
b. Remove 2 Top Panels.
c. Remove 2 screws (2). (Fig. 1)
d. Remove the Plate/Top.
 
						

							YSP-1
8
YSP-1
When checking the P.C.B. :
• The Rear Unit removed from the unit does not work
because its grounding is loose. Be sure to connect the
ground of the Rear Unit to the chassis or GND with a
lead wire or the like.  (Fig. A)
• Reconnect all cables (connectors) that have been
disconnected.
Be sure to use the extension cable for servicing for the
following section.
DSP P.C.B. CB300 – INPUT (2) P.C.B. CB9 :
MFA27160 (27P 160mm)
DSP P.C.B. CB1, CB2 – AMP P.C.B. CB3 :
MFA18160 (18P 160mm)
• When connecting the cable, use care for the polarity.
2. Removal of Rear Unit
a. Remove 22 screws (3). (Fig. 2)
b. Remove CB7, CB10 and CB14. (Fig. 3)
c. Remove the Rear Unit.
 
						

							YSP-1
9
YSP-1
 */165¢£1$#w
						

							YSP-1
10
YSP-1