Classé CP-65 PREAMPLIFIER SERVICE MANUAL v 1.
Index Mechanical Assembly PC Boards Testing Procedures Diagrams 3 17 30 33
CP-65 MECHANICAL ASSEMBLY
FACE PLATE ASSEMBLY CP-65 2 1 M UT E O O T SE CT LE O UT UT T PU 1 T PU 2 3 E AP R < ST M O L DE CP DB AN Y 65 1 MS-2347 PHILIPS 2 L1A2XR01 3 L1A3XR02 Classé - 1
FACE PLATE ASSEMBLY CP-65 TOP VIEW 1 2 3 SIDE VIEW 2 4 5 6 SIDE VIEW 1 1 2 3 4 5 L214XR01-S 6 Classé - 2
CHASSIS REAR VIEW CP-65 1 2 3 4 5 6 7 8 Classé - 3
CHASSIS CP-65 TOP VIEW 4 1 3 2 1 PLA CAPFR1 2 HDW #8 FLAT WASHER 3 BZO 8-32x3/4” BHCS 4 Classé - 6
SHIPPING AREA - FINAL ASSY CP-65 1 2 T1 PU UT O T2 PU E UT M UT O PE TA R O CT LE SE < Y DB AN ST L DE O M 5 -6 CP 1 2 Classé - 9
CP-65 PC BOARDS
MAINBOARD CP-65 N/A Classé - 10
CP-65 TESTING PROCEDURES
START - UP CP-65 N/A Classé - 14
CP-65 DIAGRAMS
B2BXR00 CP-65 Classé - 16
CP65_block.
B2B7XR03_amp.
B2B7XR03_amp.
B2B6XR00_IR_input.
B2B5XR01_Encoder.
B2B4XR01_display_5_button.
B2B4XR01_display_5_button.
B2b2XR00_line input2.
B2B1XR02_mother_PCB_with cs3310.
B2B1XR02_mother_PCB_with cs3310.
B2B1XR02_mother_PCB_with cs3310.
B2B1XR02_mother_PCB_with cs3310.
B2B1XR02_mother_PCB_with cs3310.
B2B8XR02_ext ps.
Classé 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 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.
CP-65 Power Supply 1. Visual check: - check the silkscreen of the chassis - check scratches - 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 switch the unit 2. Plug the unit. Crank variac to 60 vac. Check the polarities 3. Crank unit to 120 vac full blast.
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, IC’s, transistor sockets, connectors, relays, and diodes. 2. check for the pads of Q 305 and 306 3. check for missing parts, wrong components, cold solders, solder bridges, solder splashes, and quality of the PCB 4. PCB’s must be cleaned very well 5. check balance lock if working smoothly and the same appearance 2.
CP-65 Plug-In Board 1. Visual Inspection 1. check for the polarities of the caps, transistors, sockets and trimpots 2. check for the missing parts, wrong components, cold solders, solder bridges, solder splashes and quality of the PCB 3. check for the modification of the PCB see sample. 2. Electrical Test Plug in the unit. Measure and adjust voltages as follows: 1.
CP-65 Panel and Display 1. Visual Inspection: - check for the quality of the PCB - check for the orientation of the sockets, x’sistor, polarities, missing components, solder bridges, cold solder, wrong components - check the direction of the lightbars of display - check also the lightbars if they are soldered flat to the PCB 3. Functions: 1. install microchip 2. plug-in unit 3. led of power supply lights green 4. hear relay clicks and led turns red 5. see Classe • CP 65* on display • 6.
CP-65 Final Testing 1. Visual Inspection - check the silkscreen of the chassis - check scratches - check for all screws, washers, nuts, Pemnuts. Screws must be tight - check balance lock if working smoothly - check input/output PCB’s. Left is for Left, right is for Right. Left PCB- R6, R7 – 33 Right PCB- R1, R2- 33 2. Electrical Test 1) check the polarities of the dc cable 2) plug-in the unit. Test and measure voltages both main and phono Dc supply of the power supply.
5. Noise Test 1) connect balanced outputs to a power amplifier. Select line. Turn the volume up and down manually and listen for the noise and hum with speaker. Do the same thing in balance, Tape1 and 2 2) repeat step 1 with single ended outputs 3) repeat steps 1 and 2 with remote control 6. Paper Works 1) turn volume up to 15. measure and record the offset voltages. 2) Measure and record bias voltages 3) Measure and record the difference in right and left channels.
