Classe-CP65-pre-sm维修电路原理图.pdf
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1、CP-65ClassPREAMPLIFIERSERVICE MANUALv 1.0RadioFans.CN 收音机爱 好者资料库IndexMechanical Assembly3PC Boards17Testing Procedures30Diagrams33RadioFans.CN 收音机爱 好者资料库CP-65MECHANICALASSEMBLY1 MS-2347 PHILIPS2 L1A2XR013 L1A3XR02CP-65FACE PLATE ASSEMBLYClass - 1MODEL CP-65MODEL CP-65STANDBYSTANDBYSELECTORSELECTOR T
2、APETAPEMUTEMUTE312OUTPUT1OUTPUT1OUTPUT2OUTPUT2FACE PLATE ASSEMBLY1 2 3 4 5 L214XR01-S6 Class - 2123654TOP VIEWSIDE VIEW 1SIDE VIEW 2CP-65CHASSIS REAR VIEW1 2 3 4 5 6 7 8 Class - 3CP-65CHASSIS1 PLA CAPFR12 HDW #8 FLAT WASHER3 BZO 8-32x3/4” BHCS4 Class - 61234TOP VIEWCP-65SHIPPING AREA - FINAL ASSY12
3、Class - 9MODEL CP-65MODEL CP-65STANDBYSTANDBYSELECTORSELECTOR TAPETAPEMUTEMUTE21CP-65OUTPUT1OUTPUT1OUTPUT2OUTPUT2CP-65PC BOARDSMAINBOARDClass - 10CP-65N/ACP-65TESTINGPROCEDURESClass - 14START - UPCP-65N/ACP-65DIAGRAMSB2BXR00Class - 16CP-65CP65_block.sch-1 - Thu Jun 20 11:11:21 2002B2B7XR03_amp.sch-1
4、 - Thu Jun 20 11:00:56 2002B2B7XR03_amp.sch-2 - Thu Jun 20 11:01:28 2002B2B6XR00_IR_input.sch-1 - Thu Jun 20 10:59:40 2002B2B5XR01_Encoder.sch-1 - Thu Jun 20 10:59:01 2002B2B4XR01_display_5_button.sch-2 - Thu Jun 20 11:07:05 2002B2B4XR01_display_5_button.sch-1 - Thu Jun 20 11:08:57 2002B2b2XR00_line
5、 input2.sch-1 - Thu Jun 20 10:56:01 2002B2B1XR02_mother_PCB_with cs3310.sch-1 - Thu Jun 20 10:51:01 2002B2B1XR02_mother_PCB_with cs3310.sch-2 - Thu Jun 20 10:51:38 2002B2B1XR02_mother_PCB_with cs3310.sch-3 - Thu Jun 20 10:53:20 2002B2B1XR02_mother_PCB_with cs3310.sch-4 - Thu Jun 20 10:54:28 2002B2B1
6、XR02_mother_PCB_with cs3310.sch-5 - Thu Jun 20 10:55:06 2002B2B8XR02_ext ps.sch-1 - Thu Jun 20 11:13:08 2002 Class CP-65 Software Upgrade This document details the steps to upgrade your CP-65 Preamplifier from software revision 65-102A47 to CS103B02. This new release solves the random problem of the
7、 unit becoming unstable when using the unity gain option. Warning ! Before starting this procedure make sure the unit is shut off and unplugged from the main A.C. line. Section 1.0 Removing Main Unit Cover To remove the cover of the CP-65 main unit simply remove the 8 medium sized Philips screws and
8、 lift off the top cover. Section 2.0 Replacing the Firmware IC We have supplied 2 schematic diagrams, Figures 1 and 2, to help you locate the integrated circuit (IC) that needs to be replaced. Figure 1 shows you the complete layout of the main unit and a highlighted area in which the firmware IC (U5
9、03) is located. U503 is located in the center of figure 2 and above C340 and C317 when looking at the unit with the front panel facing you. The IC is a dual inline package with 28 pins and is placed on the main board with the notch towards the rear panel. Remove U503 with the supplied chip puller an
10、d replace it with the new IC labeled CS103B02. Make sure you place the new IC with its notch facing the rear of the unit. Incorrect placement will of U503 will cause your CP-65 not to turn on. Once you have replaced the IC you should power up the unit to ensure proper placement and seating. When you
11、 have verified proper power up of the unit you can then shut down the unit and replace the top cover. We have supplied you with 8 new top cover screws to replace any damaged or marked during this procedure. CP-65 Power Supply 1. Visual check: - check the silkscreen of the chassis - check scratches -
12、 check for all screws, washers, lock washers, PEM nuts - check for the polarities of the caps, diodes, missing components, solder bridges, cold solders, and quality of the PCB - check for the correct fuse: F6- .5A F5- 6DC 2A F1-F4- 1A 2. Electrical Test: 1. Short pin 1&3 of connector U3 in order to
13、switch the unit 2. Plug the unit. Crank variac to 60 vac. Check the polarities 3. Crank unit to 120 vac full blast. Measure all voltages as follows: a) Q8- IN-18 VDC OUT-14 VDC R13-13 VDC b) D1-12 VDC c) Q1- IN- 27.8 VDC OUT- 18 VDC d) Q2- IN- -27.8 VDC OUT- -18 VDC e) Q3- IN- 27.8 VDC OUT- 18 VDC f
14、) Q4- IN- -27.8 VDC OUT- -18 VDC g) V3- PIN#1- 13 VDC PIN#3- 4.5 VDC (w/ wad) h) V4- PIN#3- -18 VDC PIN#1- 18 VDC i) V6- PIN#3- -18 VDC PIN#1- 18 VDC j) V8- PIN#3- -18 VDC PIN#1- 18 VDC k) V7- PIN#3- -18 VDC PIN#1- 18 VDC 4. Set- up for Japan (100 VAC only) 1. remove R6, R9, Q7, Q8 (transistor leave
15、 it to the PCB 2. cut the pins of Q8 on the board and short pins 2 & 3 3. measure electrical voltage as follows a) at 95 Vac D1- 10.5 VDC R6- 11.9 VDC b) at 100 Vac D1- 11.25 VDC R6- 12.7 VDC CP-65 Mother PCB 1. Visual Inspection 1. check for the polarities of the caps, ICs, transistor sockets, conn
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