Tuesday, August 25, 2015

SONY HCD-EC68P HCD-EC78P - COMPACT DISC RECEIVER - DISASSEMBLY - POWER AMPLIFIER SCHEMATIC

HCD-EC68P is the amplifier, CD player and tuner section in MHC-EC68Pi.
HCD-EC78P is the amplifier, CD player and tuner section in MHC-EC78Pi.

Model Name Using Similar Mechanism
CDM77B-K6BD90-WOD: NEW
CDM88A-K6BD90-WOD: HCD-EC68
Mechanism Type
Except EC78P (UK): CDM77B-K6BD90-WOD
EC78P (UK): CDM88A-K6BD90-WOD
Base Unit Name
BU-K6BD90-WOD
Optical Pick-up Block Name
KSM-213DCP
HCD-EC78P: UK model
Power output (rated):
Low channel
50 W + 50 W (at 8 Ω, 1 kHz, 1% THD)
High channel
50 W + 50 W (at 8 Ω, 8 kHz, 1% THD)
RMS output power (reference)
Low channel
70 W + 70 W (per channel at 8 Ω, 1 kHz, 10% THD)
High channel
HCD-EC68P
RMS output power (reference)
70 W + 70 W (per channel at 6 Ω, 1 kHz, 10% THD) W (per channel at 8 Ω, 8 kHz, 10% THD)
HOW TO TAKE OUT THE DISC IN EMERGENCY [POWER OFF]
HOW TO REMOVE THE VOLUME CONTROL KNOB
CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION
FRONT PANEL BLOCK (EC78P: UK)
MECHANISM BELTS
HI & LOW AMPLIFIER CIRCUIT DIAGRAM