Sony HCD-VR90AV Service Manual

SERVICE MANUAL
HCD-VR90AV is the tuner, deck, CD and ampli-
fier section in LBT-VR90AV.
Amplifier section
Front Speaker:
The following measured at AC 120/220/240V, 50/60Hz
DIN power output (Rated) 130 + 130W
(6 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
160 +160W
(6 Ω at 1 kHz, 10% THD)
Center Speaker:
DIN power output (Rated) 30W
(8 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
40W
(8 Ω at 1 kHz, 10% THD)
Rear Speaker:
DIN power output (Rated) 30 + 30W
(8 Ω at 1 kHz, DIN)
Continuous RMS power output (Reference)
40 + 40W
(8 Ω at 1 kHz, 10% THD)
Inputs
PHONO IN (phono jacks): sensitivity 3mV,
impedance 47k Ω
MIX MIC (phone jack): sensitivity 1mV,
impedance 10k Ω
VIDEO1 IN (phono jacks): sensitivity 250mV,
impedance 47k Ω
VIDEO2 IN (phono jacks): sensitivity 250mV,
impedance 47k Ω
MD IN (phono jacks): sensitivity 450mV,
impedance 47k Ω
MICROFILM
HCD-VR90AV
Model Name Using Similar Mechanism
CD Mechanism Type
CD
Section
Base Unit Name
Optical Pick-up Name
Model Name Using Similar Mechanism
Tape deck
Section
Tape Transport Mechanism Type

SPECIFICATIONS

DVD INPUT
FRONT (phono jacks): sensitivity 450mV,
impedance 47k Ω
REAR (phono jacks): sensitivity 450mV,
impedance 47k Ω
CENTER (phono jacks): sensitivity 450mV,
impedance 47k Ω
WOOFER (phono jacks): sensitivity 450mV,
impedance 47k Ω
Outputs
PHONES (stereo phone jack):
accepts headphones of
8 Ω or more
VIDEO OUT (phono jack): voltage 250mV,
impedance 1k Ω
MD OUT (phono jacks): voltage 250mV,
impedance 1k Ω
WOOFER OUT (phono jack):
voltage 1V,
impedance 1k Ω
FRONT SPEAKER: accepts impedance of 8
to 16 Ω
CENTER SPEAKER: accepts impedance of 8
to 16 Ω
REAR SPEAKER: accepts impedance of 8
to 16 Ω
COMPACT Hi-Fi STEREO SYSTEM
E Model
HCD-VR50/VR70
CDM37L-5BD34L
BU-5BD34L
KSS-213D/Q-NP
NEW
TCM-230AWR2/230PWR2
Video section
Inputs
1Vp-p, 75 Ω
VIDEO1 IN (phono jacks):
1Vp-p, 75 Ω
VIDEO2 IN (phono jacks):
DVD INPUT VIDEO (phono jacks):
1Vp-p, 75 Ω
Output
1Vp-p, 75 Ω
VIDEO OUT (phono jack):
S-VIDEO OUT (4-pin/mini-DIN jack):
Y : 1Vp-p, unbalanced,
Sync negative,
C : 0.286 V p-p,
load immpedance
75 Ω
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