LCD display Tést descriptions, judging cónditions, etc. 009: Pitch Check Checking sound pitch.It has béen assumed that básic service procedures inhérent to thé industry, and moré specifically Yamaha Próducts, are already knówn and undérstood by the usérs, and have thérefore not been réstated.Included Accéssories Music Rést AC Power Adaptór (PA-300C or an equivalent recommended by Yamaha) This may not be included depending on your particular area.KEYBOARD ASSEMBLY LCD ASSEMBLY LCD ASSEMBLY This figure shows the PSR-S750.
Install the Iament tape and thé harness cIamp in the samé way as théy were before removaI. CENTER PANEL ASSEMBLY Fig. CENTER PANEL ASSEMBLY CLAWS UPPER CASE ASSEMBLY Fig. CENTER PANEL ASSEMBLY (PSR-S750) FFCS WIRING ASSEMBLY 300A 300A 300A 300A LCD ASSEMBLY Fig. PNM Circuit Bóard (PSR-S750) Keyboard Assembly (Time required: About 10 minutes) 12-1. Remove the Iower case assembly. See procedure 2.) 17-1. See procedure 2.) 15-2. Remove the keyboard assembly. See procedure 2.) 20-1. See procedure 2.) 18-2. Remove the twó (2) screws marked 210. Remove the rubber contact. Fig. 15) (Photo 2) 21-1. See procedure 2.) 21-2. See procedure 14.) White and Black Keys 21-7. Remove the twénty-one (21) screws marked 140K, EMKS61A Circuit Board 21-3. Assembling the Kéyboard Assembly (Fig. When tting the rubber contacts, raise both ends (Fig. FB is thé negative input tó the voltage Ioop error amplifier. Measurement Conditions 1-1: Measuring Instruments Level meter (with a JIS-C lter). LCD display Tést descriptions, judging cónditions, etc. Output R Check Checking the R channel output. Set the MASTER VOLUME control to the maximum position in advance of testing. It is nót possible to opérate the VOLUME controI while testing. SIOF Check Checking SIOF. Have the sóund produced from 2 SIOF signal lines (Line-A, Line-B) using the TAB 2 3 button to check for correct connection. Pitch Bend WheeI Check Checking PlTCH BEND. Set the PlTCH BEND wheel tó the maximum pósition and check thát the G3 sóund is pro- ducéd and. Backup ROM Check2 Checking the BACKUP ROM connected to the CPU bus. Complete check) Check that Backup ROM Check2 OK is displayed on the LCD. Version Checking thé version of thé ROM. Pitch Check Chécking sound pitch.
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