1 Safety Precautions 1.1. General Guidelines 1. IMPORTANT SAFETY NOTICE There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic Diagrams, Circuit Board Layout, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s specified parts to prevent X-RADIATION, shock, fire, or other hazards.
1.2. Caution for AC Cord (For GS only) Figure 1-2 1.3. Before Use (For PH only) Be sure to disconnect the AC cord before adjusting the voltage selector. Use a minus(-) screwdriver to set the voltage selector (on the bottom panel) to the voltage setting for the area in which the unit will be used.
1.5. Protection Circuitry The protection circuitry may have operated if either of the following conditions are noticed: • No sound is heard when the power is turned on. • Sound stops during a performance. The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are "shorted", or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).
2.2. Service caution based on Legal restrictions 2.2.1. General description about Lead Free Solder (PbF) The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this equipment in considering the globally environmental conservation. The normal solder is the alloy of tin (Sn) and lead (Pb).
3 Service Navigation 3.1. Service Information This service manual contains technical information which will allow service personnel’s to understand and service this model. Please place orders using the parts list and not the drawing reference numbers. If the circuit is changed or modified, this information will be followed by supplement service manual to be filed with original service manual.
4 Specifications • Specifications are subject to change without notice. • Mass and dimensions are approximate. • Total harmonic distortion is measured by the digital spectrum ana- lyzer. General Power consumption 92 W *Trolley handle at fully pushed-down position Power consumption in standby Approx.
6 Service Mode This unit is equipped with features of service mode & doctor mode setting for checking the functions & reliability. 6.1. Self Diagnostic Mode Step 1 : Select USB A mode Step 1 : In service mode Press [SETUP] on the remote control.
6.2. Self Diagnostic Function Error Code Self-Diagnostic Function provides information on any problems occurring for the unit and its respective components by displaying the error codes. These error code such as U**, H** and F** are stored in memory and held unless it is cleared. The error code is automatically display after entering into self-diagnostic mode.
6.3. Doctor Mode Note : To enter the Doctor Mode, please use MAX770 remote control. (Part No : N2QAYB000915) 6.3.1. Doctor Mode Table 1 Item Key Operation FL Display Mode Name Description Front Key Doctor Mode AUX Mode: To enter into Doctor Mode for (Display 1) 1.
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6.3.2. Doctor Mode Table 2 Item Key Operation FL Display Mode Name Description Front Key Bluetooth mac Bluetooth Address Check In Doctor Mode: Address Checking 1. Press [10] [1] and display will show. 2. To cancel this mode press Display of BlueTooth MAC Address will scroll [POWER, /I] button on forever Main Unit...
7 Troubleshooting Guide ● Reset Method (Factory Shipment Status) . Plug In AC cord together with (no 2) Press and hold the power button for 4 seconds then FL display will show RESET for 2 seconds 3. Turn off the power. ●...
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IC1001 IC4803 IC4001 Mid/Hi Speaker YAMAHA C1AB00003800 SW Speaker Check Command From SoC Pin 4,5 Check IC Supply IC4001 Check Xtal Opera on (3.3V) : Pin 21,40 Troubleshoo ng X4001 (24 MHz) Check Audio Input Pin : 6 (Mic ) Digital Data Square wave Pin : 7 (AUX - Non GS/JPN) (0-3.3V )
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Change D-AMP IC Check Spekaer Output JK3503 : Sub Woofer Ch Result : +36V (VDD) SW : IC3101 DAMP + Terminal to GND Hi/Mid : IC3301 JK3502 : Mid/Hi Ch Troubleshoo ng - Terminal to GND Check D-AMP IC Result : +18V (1/2 SW : IC3301 VDD) Hi/Mid : IC3301...
8 Disassembly and Assembly Instructions • This section describes the disassembly and/or assembly procedures for all major printed circuit boards & main compo- nents for the unit. (You may refer to the section of “Main components and P.C.B Locations” as described in the service manual) •...
8.1. Disassembly flow chart The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the ser- vicing. To assemble the unit, reverse the steps shown in the chart below. 8.1.1. Amp Unit 8.1.2.
8.4. Disassembly of Handle Bar 8.5. Disassembly of Rear Panel Unit • Refer to “Disassembly of Handle Bar Unit” Step 1 : Remove 6 screws. Step 1 : Remove 4 screws. Caution : During assembling, fixed the screws in sequence Step 2 : Remove Handle Bar Unit.
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• (For PH only) Step 5 : Detach 2P Fan wires at connector (CN2101) on the Step 4 : Remove Voltage Selector P.C.B. as shown. Main P.C.B. Assembly. Caution: During assembling, ensure Voltage Selector Step 6 : Remove Rear Panel. P.C.B.
8.6. Disassembly of Amp Unit Step 8 : Place Amp Unit Block on the support block. Step 9 : Cut the cable tie. Block Step 10 : Detach 4P wire at connector (CN2604) on Main • Refer to “Disassembly of Handle Bar Unit” P.C.B.
8.7. Disassembly of Main P.C.B. 8.8. Disassembly of SMPS Module Assembly & Voltage Selector P.C.B. • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Rear Panel” • Refer to “Disassembly of Rear Panel” •...
8.9. Disassembly of Top Panel Unit 8.10. Disassembly of Bluetooth P.C.B. Assembly • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Rear Panel” • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Amp Unit Block” •...
8.11. Disassembly of Panel P.C.B. Step 3 : Remove 15 screws. • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Rear Panel” • Refer to “Disassembly of Amp Unit Block” • Refer to “Disassembly of Top Panel Unit” •...
Step 5 : Detach 30P FFC at connector (CN6005) on Panel 8.12. Disassembly of FL Display P.C.B.. P.C.B. Step 6 : Remove Panel P.C.B.. • Refer to “Disassembly of Handle Bar Unit” • Refer to “Disassembly of Rear Panel” • Refer to “Disassembly of Amp Unit Block” •...
8.13. Disassembly of Top Front Step 3 : Detach speaker wire. Step 4 : Remove Top Front Panel Block. Panel Block Step 1 : Remove 4 screws. Step 2 : Detach Top Front Panel Block.
8.14. Disassembly of Tweeter 8.15. Disassembly of Woofer Speaker (6cm) Speaker (10cm) • Refer to “Disassembly of Top Front Panel Block” • Refer to “Disassembly of Top Front Panel Block” Step 1 : Detach speaker wire. Step 1 : Detach speaker wire. Step 2 : Remove 4 screws.
8.16. Disassembly of Center Front Caution 1 : Scrape off and clean up the remaining glue at the boss and hole. Panel Caution 2 : During assembling, align the hole of the Boss with the Center Front Panel and fix it properly. Step 1 : Remove 2 screws.
8.17. Disassembly of Subwoofer Step 2 : Insert flathead screwdriver into the grooves. Step 3 : Apply light force to push the Subwoofer Front Panel Front Panel Block Block as arrow shown. • Refer to “Disassembly of Center Front Panel” Step 4 : Insert a steel rule in between the Subwoofer Front Panel Block and Speaker Cabinet Assembly.
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Step 6 : Lift up himelon. Caution 1 : Scrape off and clean up the remaining glue at the boss and hole. Caution : Replace the himelon if they are torn during disas- Caution 2 : During assembling, align the holes of the sembling.
8.18. Disassembly of Woofer 8.19. Disassembly of Lighting Wire Speaker (25cm) P.C.B. Assembly • Refer to “Disassembly of Center Front Panel” • Refer to “Disassembly of Center Front Panel” • Refer to “Disassembly of Subwoofer Front Panel Block” • Refer to “Disassembly of Subwoofer Front Panel Block” Step 1 : Remove 8 screws.
9 Service Position Note: For description of the disassembly procedures, see the Section 8 9.1. Checking of SMPS Module, Voltage Selector P.C.B. & Main P.C.B. Assembly Step 9 : Place Main P.C.B. Assembly on support block. Step 1 : Remove Handle Bar Unit. Step 10 : Connect 4P wire at connector (CN2508) on Main Step 2 : Remove Rear Panel.
Step 18 : Place SMPS Module on support block. 9.2. Checking of Bluetooth P.C.B. Step 19 : Connect 13P wire at connector (CN2103) on Main Assembly, Panel P.C.B. & FL P.C.B. Assembly. Display P.C.B. Step 1 : Remove Handle Bar Unit. Step 2 : Remove Rear Panel.
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Step 11 : Place Panel P.C.B. on support block. Step 18 : Place FL Display P.C.B. & Bluetooth P.C.B. Assembly Step 12 : Connect 4P wire at connector (CN2508) on Main on support block. P.C.B. Assembly. Step 19 : Connect 12P FFC at connector (P7701) on Bluetooth Step 13 : Connect 30P FFC at connector (CN2506) on Main P.C.B.
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Step 21 : Check Panel P.C.B., Bluetooth P.C.B. Assembly & FL Display P.C.B. according to the diagram shown.
FLASH DAT1 WP#(DQ2) FLASH DAT2 DI(DQ0) FLASH DAT0 FLASH CLK HOLD#(DQ3) FLASH DAT3 IC1004 RFKWECMAX5GM EEPROM EEPROM SDA EEPROM SCL TO SYSTEM CONTROL BLOCK (2/3) NOTE: “ * ” REF IS FOR INDICATION ONLY SC-CMAX5GS/PH/PR SYSTEM CONTROL (1/3) BLOCK DIAGRAM...
I2C SDA NRST NRST DSP ERR DSP ERR FOR PH/PR SYNC SYNC SOC MCLK SOC MCLK PDET DC DET PWR ILLUMINATION ILLUMINATION GUITAR SW GUITAR SW MIC DET MIC DET MPORT DET MPORT DET SC-CMAX5GS/PH/PR SYSTEM CONTROL (3/3) BLOCK DIAGRAM...
CN2510 MPORT IN L COM Y 3 VINL LRCK 7 TUN WCK TUN SDO DOUT DOUT 9 MCK OUT SCKI 6 FOR PH/PR SOC MCLK CN6300 CN2510 MPORT DET MPORT DET MPORT DET SYSTEM CONTROL SC-CMAX5GS/PH/PR AUDIO (1/3) BLOCK DIAGRAM...
BLOCK (3/3) 9 WCK IN 46 SDO1 FOR PH/PR 5 SDI1 MCK OUT 48 MCK OUT 13 XIN X4801 14 XOUT DSP ERR 19 IRQ N FROM/TO SYSTEM CONTROL DSP RESET2 11 IC N FOR GS SC-CMAX5GS/PH/PR AUDIO (2/3) BLOCK DIAGRAM...
INPUT A BST A INPUT B OUT A JK3503 OUT A SUBWOOFER JK3503 OUT B BST B /OTW BST C /FAULT OUT C OUT D OUT D DAMP RST /RST BST D TO AUDIO BLOCK (2/3) SC-CMAX5GS/PH/PR AUDIO (3/3) BLOCK DIAGRAM...
REGULATOR +3.3V 1 CN +1.8V VO 3 +1.8V +3.3V 4 VIN FOR GS CN2103 PCONT PCONT CN2103 SMPS ID SMPS ID FROM/TO SYSTEM CONTROL CN2103 TEMP DET TEMP DET TO POWER SUPPLY BLOCK (2/2) SC-CMAX5GS/PH/PR POWER SUPPLY (1/2) BLOCK DIAGRAM...
IC9003 C0DBZYY00716 USB HIGH SIDE SWITCH CN2507 CN1401 PW MUX +12V PW MUX +12V PW MUX +12V +12V +12V D2108 TO POWER SUPPLY BLOCK (1/2) NOTE: “ * ” REF IS FOR INDICATION ONLY SC-CMAX5GS/PH/PR POWER SUPPLY (2/2) BLOCK DIAGRAM...
12 Schematic Diagram 12.1. Schematic Diagram Notes (All schematic diagrams may be modified at any time with the development of new technology) Notes: S1400: MIC/GUITAR SWITCH. S6200: POWER SWITCH ( S6202: STOP SWITCH ( ). S6211: SUPER WOOFER SWITCH. S6212: LATIN/PRESET EQ SWITCH.
RIGHT AUX IN 2 L6301 J0JBC0000019 L6300 J0JBC0000019 JK6104 R6152 LB6404 C6407 CN6400 J0JBC0000019 LEFT AGND R6153 MAIN (DSP) CIRCUIT L-CH_OUT (CN2508) AGND R6150 LB6405 C6408 AUDIO OUT IN SCHEMATIC R6151 R-CH_OUT J0JBC0000019 RIGHT DIAGRAM - 3 SC-CMAX5GS/PH/PR PANEL CIRCUIT...
R9003 VR6200 USB A (PLAY) C6021 CN6401 LB6000 C6400 LB6400 LB6401 R9002 R9001 C6401 R9000 JK6401 MIC VOL 2/GUITAR USB B (REC/PLAY) MIC VOL 1 VOLUME ILLUMINATION/ CONTROL NOTE: " * " REF IS FOR INDICATION ONLY SC-CMAX5GS/PH/PR PANEL P.C.B.
14 Voltage and Waveform Measurement 14.1. Voltage Measurement Note: • Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance) with the chassis taken as standard. Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester. •...
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14.1.2. MAIN P.C.B. ASS’Y (2/4) IC2102 REF NO. MODE PLAY 15.3 STANDBY 15.3 IC2103 REF NO. MODE PLAY 21.3 39.5 15.2 STANDBY 21.3 39.5 15.2 IC2104 REF NO. MODE PLAY STANDBY IC2107 REF NO. MODE PLAY STANDBY IC2108 REF NO. MODE PLAY STANDBY...
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14.1.3. MAIN P.C.B. ASS’Y (3/4) IC4001 REF NO. MODE PLAY STANDBY IC4001 REF NO. MODE PLAY STANDBY IC4506 REF NO. MODE PLAY -1.6 -3.2 STANDBY -1.6 -3.2 IC4800 REF NO. MODE PLAY STANDBY IC4801 REF NO. MODE PLAY STANDBY IC4802 REF NO.
15.6. Mechanical Replacement Parts List Safety Ref. No. Part No. Part Name & Qty Remarks Description RKA0335-K CUSHION B Safety Ref. No. Part No. Part Name & Qty Remarks RKA0336-K CHASSIS CUSHION Description RMZX1022-1 PCB SPACER RGW0428-1S VOLUME KNOB CABINET AND CHASSIS RGW0435-K SKIP KNOB...