Sansui 8900ZDB Service Manual

9900Z/8900ZDB/7900Z
| © SPECIFICATIONS -
SERVICE MANUAL
@ Audio section:
Power output
<9900Z> : ; :
Min. RMS, both channels drivén; fron’ 20 to 20,000 ‘Hz, with
“no more than 0,015 % total harmonic distortion. : : :
160 watts per channel into:8 ohms
<8900ZDB>. ernest
~ Min; RMS, both channels driven, from 20 to 20, 000 Hz, with
‘no more than-0.02 % total-harmonic distortion
125 waits per channel into 8 ohms
<7900Z> : :
“Min. RMS, both channels davai from.20 to 20, 000 Hz; ‘with
no.more than 0.02 % total harmonic distortion - es
100 watts per channel into-8 ohms :
Load.impedance ... ; .°8 ohms -
Total harmonic distortion ©” Csi, Be Re ea
©. <€9900Z>. 0... 12°.) + less than 0:015 % at-or below
: ~ : rated:‘min: RMS power: output”.
* <8900ZDB, 7900Z> - :. less than 0.02.%'at or below :
: ~ rated min. RMS. power outpi
: (nternéditiation distortion (60 Hz : 7 kHz = 4-2-7 ‘SMPT
DIGITAL QUARTZ SYNTHESIZER.
‘DC STEREO RECEIVER
SANSUI 99007
method) Bh
25 €9900Z> oe ee ed bess than 0. 01s 6 at: rated power ve
y “os outpdt.. 5: =
<8900ZDB, 7900Z> less than 0.02 % at “rated power
output °° a ‘
Frequency Fesponse (at 1 watt) ae “
Overall (from AUX)... 5 to:100,000 Hz; 40 dB, =3 0. 4
RIAA curve deviation (PHONO, 20. Hz‘to 20: KHz). °
se igetselt ope eles arta tahetes +0:2.dB,:—0.2 dB.
Damping factor (20 Hz. to.20 kHz, both channels driv
whe -Gkad. ata pesditene rete» 40 into 8 ohms
input sensitivity _ impedance (at 1kHz).
PHONO-1, 2: -2.5:mV/47 kilohms:
(Max: input capability 200 mV.at‘l kHz, less than ot %:
total harmonic'distortion)” ‘
as 1,2 PLAY; AUX:
Output level (at.1 ete
TAPE: q = REC.
Channel separation (at 1:kHz)
PHONO-1,20 23.2 50.dB *
AUX... 6.003 ee 60dB -*
Controls 2 CeO EA
“ BASS. . 205. eee i $10.dB at'50-Hz
TREBLE ©. .:. .- +10 dB at 10 kHz ®: Bf
HIGH FILTER’. =3 dB ‘at 5. kHz.(6 dB/oct).
LOUDNESS (VOLUME: ~30 dB position) =
sugeatets ce eee ee 8B at SOHZ 8 22
$ 6-dB at.10:kH2":
AUDIO MUTING. <. —20dB° 1.”
“to be continuédh ~

Sansui 8900ZDB Specifications

General

Brand	Sansui
Model	8900ZDB
Category	Stereo Receiver
Language	English

Summary

Specifications

Audio Section Performance

Details on power output, distortion, frequency response, and sensitivity.

FM and AM Section Specifications

Technical details for FM and AM tuning sensitivity, selectivity, and distortion.

Parts List

Digitally Frequency Display Circuit Board (F-3296)

Component breakdown for the F-3296 circuit board.

Preset Section Circuit Board (F-3297)

Component breakdown for the F-3297 circuit board.

Analog Dial Display Circuit Board (F-3298)

Component breakdown for the F-3298 circuit board.

Tuner Circuit Board (F-3300)

Component breakdown for the F-3300 tuner circuit board.

Packing and Accessory Parts

Lists of packing materials and accessory items.

Exploded View of Motor Volume Control Mechanism

Motor Volume Control Parts List

List of components for the motor volume control assembly.

Operations

Tuner Section Operations

Explains tuning selection, manual tuning, and memory functions.

Manual Tuning Operation

Details on manual tuning for 9900Z/8900ZDB and muting operation.

Interior Block Diagram of IC

TC9140P (PLL Synthesizer Control IC)

Block diagram and terminal functions of the TC9140P IC.

Adjustments

FM Adjustments

Procedures for IF, RF, and FM stereo adjustments.

Bias Current Adjustment

Steps for adjusting bias current for L-ch and R-ch.

AM IF Adjustment and Dial Calibration

Procedures for AM IF coil, AFC, RF adjustments, and auto search.

Other Parts

Front, Top, and Bottom Views (9900Z)

Visual identification of parts based on front, top, and bottom views.

Front, Top, and Bottom Views (8900ZDB)

Visual identification of parts based on front, top, and bottom views.

Front, Top, and Bottom Views (7900Z)

Visual identification of parts based on front, top, and bottom views.

Threading of Volume Control

Volume Control Stringing Procedure

Step-by-step instructions for threading the volume control string.

Packing List

Packing Materials by Model

Lists of packing materials for each model.

Accessory Parts List

Accessory Items by Model

Lists of included accessory parts for each model.